Bluebulb Projects' The Measure of Things presents:
3,900 is about two-and-a-half times the number of Golf Courses in Florida.
In other words, it's 2.569 times the count of Golf Courses in Florida, and the count of Golf Courses in Florida is 0.3893 times that amount.
(2016 figures) (public and private)
The US state of Florida includes 1,518 golf courses in its 170,000 sq. km area. The state is also the home of the headquarters of the Professional Golfers' Association (PGA) of America, which boasts a membership of 28,000 professional golfers.