The Original Drawings:
Mars Jupiter

Mars (3.936458043) times (2+sqrt2) = Jupiter (13.43990844).

2 + sqrt 2 is diameter of orbit, Mercury plus sqrt, diameter of orbit, Mercury.

It is also consistent with previous factors belonging to the family of averages between two square roots of whole numbers because 2+sqrt 2 is the same as .5 (sqrt16 + sqrt 8).