Laurel’s Muffins

Laurel has a muffin recipe that calls for 7 cups of flour for every 2 cups of milk.  If she has only 4 cups of flour, how much milk does she need to use?

A student has solved the problem using the following table:

Explain what you think this student is doing and assess the procedure.

(Source: Adapted from Mathematics for Elementary Teachers, Sybilla Beckman, 2nd ed., 2008)