Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 6 - Section 6.2 - Proportions - Exercise Set: 37

Answer

$x=3$

Work Step by Step

We are trying to solve for the given variable so that the proportion is true. To determine if a proportion is true, we have to find if the cross products are equal. The cross products of $\frac{a}{b}=\frac{c}{d}$ are $a \cdot d$ and $b \cdot c$. $x*10=6*5$ $10x=30$ $10x\div10=30\div10$ $x=3$
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