Ratios - Math is Fun So the ratio of flour to milk is 3 : 2 To make pancakes for a LOT of people we need 4 times the quantity, so we multiply the numbers by 4: 3×4: 2×4 = 12 : 8 In other words, 12 cups of flour and 8 cups of milk The ratio is still the same, so the pancakes should be just as yummy