How to show values less than or equal to another value in drop down list, data validation

Hello,

I have a problem where I want to show in a drop down list only the names that refer to values that are less than or equal to a separate value. I would be able to do this using data validation but I'm not sure how to go about it.

I have included a spreadsheet with the number of marbles and four bags with different capacities. In the drop down list, I would like to only show the number of the bags that the marbles will fit in. For example, if there were 200 marbles then the drop down list would only show 2 and 3 as the capacity of bag 2 and 3 are larger than the number of marbles.

Thank you for your help in advance!

emily31