Answer:
The recipe calls for 4/3 cups of oatmeal and 9/2 cups of flour.
If we convert them to a common denominator, we have 8/6 cups of oatmeal and 27/6 cups of flour, so, the ratio is 8:27.
If you use 6 cups of oatmeal and 9 cups of flour, the ratio will become 2:3 and will no longer be proportional
