As an exercise in curve fitting, the known elements in the third and fourth rows are fitted to second-order polynomials in an attempt to locate the undiscovered elements. The third row gives an atomic-weight fit and a specific-gravity fit . The atomic weight and specific-gravity of Ekaboron are predicted to be and , respectively. These agree reasonably well with the later-discovered element Scandium: 45 and 2.99, shown as blue stars. For the fourth row, the corresponding fits give and . The predictions for Ekaaluminum are and , compared with Gallium: 69.7 and 5.90. For Ekasilicon, and , compared with Germanium: 72.6 and 5.32.