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Finding the Fourth Proportional to 1,687.91, 2,530.71 and 592.13

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Solution

The fourth proportional to 1,687.91, 2,530.71 and 592.13 is: 887.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.91 : 2,530.71 = 592.13 : x
  2. Step 2: Convert to fraction form
    1,687.91/2,530.71 = 592.13/x
  3. Step 3: Cross multiply
    1,687.91x = 2,530.71 × 592.13
  4. Step 4: Simplify right side
    1,687.91x = 1,498,496.66
  5. Step 5: Solve for x
    x = 1,498,496.66/1,687.91
  6. Step 6: Final answer
    x = 887.78

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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.