[
  "For equivalent ratios, find the multiplier or divisor that connects the two known corresponding terms.",
  "The right side changed from 8 to 2: 8 / 4 = 2, so divide by 4. Apply the same to the left: 36 / 4 = 9.",
  "The missing term is 9. So 36 : 8 = 9 : 2."
]