How to Calculate Ratios In order to keep numbers in direct relation you should first divide or multiply, which depends on your task, them in the ratio. Therefore, a ratio of 8/6 is an

To make a 5:1dilution ratio for a gallon, we add the ratio numbers together like this: 5+1=6. Then we take 128oz and divide that by 6 and we get 21.3333333. So put 21.3oz of