Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 5 - Ratio and Proportion - 5.3 Proportions - 5.3 Exercises - Page 350: 6



Work Step by Step

We are given that 6 dollars is to 9 dollars as 10 dollars is to 15 dollars. In order to write this as a proportion, we can write both relations as fractions. 6 dollars is to 9 dollars can be written as $\frac{6 dollars}{9 dollars}$ 10 dollars is to 15 dollars can be written as $\frac{10 dollars}{15 dollars}$ Next, we can set both fractions equal to each other, which gives us a proportional relationship. $\frac{6 dollars}{9 dollars}=\frac{10 dollars}{15 dollars}$ Since the units in the numerators and denominators are same, we can simplify by dropping the units from both fractions. $\frac{6}{9}=\frac{10}{15}$
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