To Scale an Element(s) Graphically
Select or fence the element(s).
Select the Scale tool (
In the tool settings window, set Method to 3 points.
Turn on the Proportional check box.
Enter a data point to define the point to scale about.
Enter a data point to define a known location or keypoint.
Enter a data point to define scaling factors.
Scale element with Method set to 3 points and Proportional check box turned on.