If 2 cups of scallions are used what are the other amounts?

A recipe calls for 1 tsp of mustard seed, 6 c of tomato sauce, 4 1/2 T chopped scallions,and 8 1/4 c of beans.

If 3 cup of tomatoes are used what are the other amounts?

A recipe calls for 1 tsp of mustard seed, 6 c of tomato sauce, 4 1/2 T chopped scallions, and 8 1/4 c of beans. If 3 cups of tomato sauce is used how much of the other ingredients should be used to keep proportions the same.