Enter the total change in imports ($) and the total change in income or production ($) into the Marginal Propensity to Import Calculator. The calculator will evaluate the Marginal Propensity to Import.

## Marginal Propensity to Import Formula

The following two example problems outline the steps and information needed to calculate the Marginal Propensity to Import.

**MPM = dI / dP**

Variables:

- MPM is the Marginal Propensity to Import ($/$)
- dI is the total change in imports ($)
- dP is the total change in income or production ($)

## How to Calculate Marginal Propensity to Import?

The following steps outline how to calculate the Marginal Propensity to Import.

- First, determine the total change in imports ($).
- Next, determine the total change in income or production ($).
- Next, gather the formula from above = MPM = dI / dP.
- Finally, calculate the Marginal Propensity to Import.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

total change in imports ($) = 300,000

total change in income or production ($) = 400,000

MPM = dI / dP** **= ?