The gallons of gas required by Ryan to travel 286 miles is 13.2 gallons.
As the stated question;
Total gallon of gas used to drive the 260 miles = 12 gallons
Let 'x' be the gallon of gas used to drive the 286 miles.
Then, bu using the proportion
12 / 260 = x / 286
Thus,
x = 286 x 12 / 260
x = 13.2 gallons
Thus, the amount of gas required by Ryan to travel 286 miles is 13.2 gallons.
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