Question

Solve the proportion using cross products. Round to the nearest hundredth if necessary. $18.45/m gal = $3.60/7.5gal

Answer 1

$\dfrac{\ 18.45}{n \text { gallon}} = \dfrac{\ 3.60}{7.5 \text { gallon}}$

Cross multiply
$n \times \ 3.60 = 7.5 \times \ 18.45$

Combine like terms
$3.60n = 138.375$

Find n
$n = 138.375\div 360$

Answer
$n = 0.38 \text { (nearest hundredth)}$

Answer 2

Answer:

m = 38.44

Step-by-step explanation:

Let's consider the following proportion.

$18.45/m gal = $3.60/7.5gal

According to the cross products property of proportions, the product of the means is equal to the product of the extremes.

$18.45 × 7.5gal = m gal × $3.60

m gal = $18.45 × 7.5gal/ $3.60

m gal = 38.44gal

m = 38.44