One Is To Three As Three Is To Five

One is to three as three is to five and five is to four and four is the magic number.

What is the pattern?

Answer

It’s the number of letters in the words.

One has three letters in the word, three has five letters in it, five has four letters and four has four letters in it.

If you try more numbers they will always come back to the number four, so four is the magic number.