Basic College Mathematics (10th Edition)

Published by Pearson

Chapter 5 - Ratio and Proportion - 5.3 Proportions - 5.3 Exercises - Page 351: 34

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Work Step by Step

To determine whether $\frac{28}{17}=\frac{9\frac{1}{3}}{5\frac{2}{3}}$ is true, determine whether the cross products are equal. $28\times5\frac{2}{3} = 17\times9\frac{1}{3}$ $\frac{28}{1}\times\frac{17}{3} = \frac{17}{1}\times\frac{28}{3}$ $\frac{476}{3} = \frac{476}{3}$ The cross products are equal so the proportion is true.

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