Glencoe Math: Course 3, Volume 2
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Glencoe Math: Course 3, Volume 2 View details
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Exercise 1 Page 504

Solve for the variable by using the Cross Products Property.

3.5

Practice makes perfect
To solve the proportion, we will use the Cross Products Property.
x/15 = 7/30
30x = 15(7)
30x/30 = 15(7)/30
30x/30 = 15(7)/2 * 15
30x/30 = 15(7)/2 * 15
x = 7/2
x = 3.5