Home / 1,687.20-2,530.92-591.18

Finding the Fourth Proportional to 1,687.20, 2,530.92 and 591.18

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Solution

The fourth proportional to 1,687.20, 2,530.92 and 591.18 is: 886.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.20 : 2,530.92 = 591.18 : x
  2. Step 2: Convert to fraction form
    1,687.20/2,530.92 = 591.18/x
  3. Step 3: Cross multiply
    1,687.20x = 2,530.92 × 591.18
  4. Step 4: Simplify right side
    1,687.20x = 1,496,229.29
  5. Step 5: Solve for x
    x = 1,496,229.29/1,687.20
  6. Step 6: Final answer
    x = 886.81

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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.