This question on math and needs to be written a proportion

g = 3

Step-by-step explanation:

miles / gallon = miles / gallon

104 / 4 = 78 / g

cross-multiply to solve for 'g':

78(4) = 104g

312 = 104g

312/104 = g

3 = g

104/4 78/g

Step-by-step explanation

You need to find you y value, place it on top of your fraction, then find your x value to place on bottom, thats on your first column row which will mean its 104 miles ran and 4 gallons used, thats trip 1. You need to do the same for trip #2 and then solve your proportion to find the answer. proportion: \frac{104}{4}  \frac{78{g}