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- https://math.libretexts.org/Courses/Barton_Community_College/Book%3A_Technical_Mathematics_(Turner)/04%3A_Business_Math/4.03%3A_Introduction_to_ProportionIn this section, we equate ratio and rates in a construct called a proportion.
- https://math.libretexts.org/Courses/Honolulu_Community_College/Math_75X%3A_Introduction_to_Mathematical_Reasoning_(Kearns)/05%3A_Using_Algebra-_Writing_Solving_and_Manipulating_Some_Different_Types_of_Equations/5.04%3A_Proportions-_Equations_Between_RatiosIn this section, we equate ratio and rates in a construct called a proportion.
- https://math.libretexts.org/Courses/Las_Positas_College/Foundational_Mathematics/06%3A_Ratio_Proportion_and_Measurement/6.03%3A_Introduction_to_ProportionIn this section, we equate ratio and rates in a construct called a proportion.
- https://math.libretexts.org/Courses/Western_Technical_College/PrePALS_PreAlgebra/08%3A_Ratios_and_Proportions/8.02%3A_ProportionsIn this section, we equate ratio and rates in a construct called a proportion.
- https://math.libretexts.org/Courses/Western_Technical_College/PrePALS_Math_with_Business_Apps/06%3A_Ratios_and_Proportions/6.02%3A_ProportionsIn this section, we equate ratio and rates in a construct called a proportion.
- https://math.libretexts.org/Courses/Nova_Scotia_Community_College/MATH_1043/01%3A_Numerical_Literacy/1.06%3A_Percents/1.6.05%3A_Solve_Proportions_and_their_Applications_(Part_1)A proportion states that two ratios or rates are equal. The proportion is read “a is to b, as c is to d”. If we compare quantities with units, we have to be sure we are comparing them in the right ord...A proportion states that two ratios or rates are equal. The proportion is read “a is to b, as c is to d”. If we compare quantities with units, we have to be sure we are comparing them in the right order. For any proportion of the form a/b = c/d, where b ≠ 0, d ≠ 0, its cross products are equal. So, cross products can be used to test whether a proportion is true. To find the cross products, we multiply each denominator with the opposite numerator (diagonally across the equal sign).
- https://math.libretexts.org/Bookshelves/Geometry/Elementary_College_Geometry_(Africk)/04%3A_Similar_Triangles/4.01%3A_ProportionsIn our discussion of similar triangles the idea of a proportion will play an important role. In this section we will review the important properties of proportions.
- https://math.libretexts.org/Courses/Coalinga_College/Math_for_Educators_(MATH_010A_and_010B_CID120)/12%3A_Congruence_and_Similarity_with_Constructions/12.01%3A_Similar_Triangles/12.1.01%3A_ProportionsIn our discussion of similar triangles the idea of a proportion will play an important role. In this section we will review the important properties of proportions.
- https://math.libretexts.org/Courses/Grayson_College/Prealgebra/Book%3A_Prealgebra_(OpenStax)/06%3A_Percents/6.5%3A_Solve_Proportions_and_their_Applications_(Part_1)A proportion states that two ratios or rates are equal. The proportion is read “a is to b, as c is to d”. If we compare quantities with units, we have to be sure we are comparing them in the right ord...A proportion states that two ratios or rates are equal. The proportion is read “a is to b, as c is to d”. If we compare quantities with units, we have to be sure we are comparing them in the right order. For any proportion of the form a/b = c/d, where b ≠ 0, d ≠ 0, its cross products are equal. So, cross products can be used to test whether a proportion is true. To find the cross products, we multiply each denominator with the opposite numerator (diagonally across the equal sign).
- https://math.libretexts.org/Courses/Las_Positas_College/Foundational_Mathematics/07%3A_Percents/7.07%3A_Solve_Proportions_and_their_Applications_(Part_1)A proportion states that two ratios or rates are equal. The proportion is read “a is to b, as c is to d”. If we compare quantities with units, we have to be sure we are comparing them in the right ord...A proportion states that two ratios or rates are equal. The proportion is read “a is to b, as c is to d”. If we compare quantities with units, we have to be sure we are comparing them in the right order. For any proportion of the form a/b = c/d, where b ≠ 0, d ≠ 0, its cross products are equal. So, cross products can be used to test whether a proportion is true. To find the cross products, we multiply each denominator with the opposite numerator (diagonally across the equal sign).
- https://math.libretexts.org/Bookshelves/PreAlgebra/Prealgebra_1e_(OpenStax)/06%3A_Percents/6.05%3A_Solve_Proportions_and_their_Applications_(Part_1)A proportion states that two ratios or rates are equal. The proportion is read “a is to b, as c is to d”. If we compare quantities with units, we have to be sure we are comparing them in the right ord...A proportion states that two ratios or rates are equal. The proportion is read “a is to b, as c is to d”. If we compare quantities with units, we have to be sure we are comparing them in the right order. For any proportion of the form a/b = c/d, where b ≠ 0, d ≠ 0, its cross products are equal. So, cross products can be used to test whether a proportion is true. To find the cross products, we multiply each denominator with the opposite numerator (diagonally across the equal sign).
