Home / 1,811.22-2,716.80-512.70

Finding the Fourth Proportional to 1,811.22, 2,716.80 and 512.70

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Solution

The fourth proportional to 1,811.22, 2,716.80 and 512.70 is: 769.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811.22 : 2,716.80 = 512.70 : x
  2. Step 2: Convert to fraction form
    1,811.22/2,716.80 = 512.70/x
  3. Step 3: Cross multiply
    1,811.22x = 2,716.80 × 512.70
  4. Step 4: Simplify right side
    1,811.22x = 1,392,903.36
  5. Step 5: Solve for x
    x = 1,392,903.36/1,811.22
  6. Step 6: Final answer
    x = 769.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.