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McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

Study Guide and Review

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Exercise 12 Page 607

Solve for the variable by using cross products.

4.5

Practice makes perfect

To solve the proportion, we will start by using cross products. Then, we will continue solving for x by using the Properties of Equality.

7/x=14/9

Cross multiply

63=14x

.LHS /14.=.RHS /14.

63/14=x

a/b=.a /7./.b /7.

9/2=x

Calculate quotient

4.5=x

Rearrange equation

x=4.5

Subchapter links

1 Ratios and Proportions p.607

2 Similar Polygons p.607

3 Similar Triangles p.608

4 Parallel Lines and Proportional Parts p.608

5 Parts of Similar Triangles p.609

6 Similarity Transformations p.609

7 Scale Drawings and Models p.610