According to the proportion of every one - i. e. “as large as the room left for them allowed,” implying that the panels were smaller than those on the sides of the base, and allowed scant room for the representations.
Related Commentaries of 1 Kings 7:36
1 Kings 7:36
36 For on the plates of the ledges thereof, and on the borders thereof, he graved cherubims, lions, and palm trees, according to the proportioni of every one, and additions round about.