Size Designer

Using the “Size” designer you can set the measure, the values of which for every element will determine the size of the corresponding circle.

Drag the “Reseller Freight Cost” measure into the “Size” designer:

As you can see, the sizes of different circles became consistent with the values of freight cost.

You can adjust the sizes of the circles on the diagram by setting the range of sizes in the “Size” designer. The smallest and the largest circle sizes can be set using the special control:

Also you can make the dependency of the size from the measure value reversed by checking the “Reverse” option: