Gas costs $3.65 what is estimated cost 14.2 gallons

For this, you can write a ratio: $3.65 : 1 gallon, that is to say, $3.65 will buy you one gallon of gas. if you multiply 1 by 14.2, you have to do the same to the $3.65. Therefore, the answer is the solution to $3.65 x 14.2, which is $51.83