Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10:
ISBN 13:

Chapter 5 - Ratio and Proportion - Mixed Review Exercises - Page 374: 8



Work Step by Step

We can take the cross products of the given proportion to determine whether or not the proportion is true. If the cross products are equal, then we know that the proportion is true. $\frac{5.6}{.6}=\frac{18}{1.94}$ $5.6\times1.94=.6\times18$ $10.864\ne10.8$ Although the cross products have nearly the same value, they are not equal. Therefore, the proportion is False.
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