Glencoe Math: Course 2, Volume 2
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Glencoe Math: Course 2, Volume 2 View details
4. Scale Drawings
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Exercise 22 Page 582

Solve for the variable by using the Cross Products Property.

b = 10

Practice makes perfect

To solve the proportion, we will start by using the Cross Products Property.

2/5 = b/25
2 * 25 = 5 * b
50 = 5b

From here, we will continue solving for b by using the Division Property of Equality.

50 = 5b
50/5 = 5b/5
50/5 = 5b/5
50/5 = b
10 = b
b = 10

Checking Our Answer

Let's Check!
Now we can check our answer by substituting it into the original equation.

2/5 = b/25
2/5? =10/25
2/5? =10 ÷ 5/25 ÷ 5
2/5= 2/5 ✓

Because both sides of the equation are the same, we know that our solution is correct!