based on the masses of CaCl2 and Na3PO4 you determined from the periodic table, what mass combining ratio would you predict?

Answer 1

3CaCl2 + 2Na3PO4 ==> Ca3(PO4)2 + 6NaCl

It would have been nice to given us the molar masses you found; otherwise the ratio may be slightly different if you are using one molar mass and we use another.
molar mass CaCl2 = approx 111
molar mass Na3PO4 = approx 259
So 111*3 g CaCl2 will combine with 2*258g Na3PO4. Can you finish?

Answer 2

1