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Finding the Fourth Proportional to 3,124.52, 4,687.12 and 933.90

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Solution

The fourth proportional to 3,124.52, 4,687.12 and 933.90 is: 1,400.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.52 : 4,687.12 = 933.90 : x
  2. Step 2: Convert to fraction form
    3,124.52/4,687.12 = 933.90/x
  3. Step 3: Cross multiply
    3,124.52x = 4,687.12 × 933.90
  4. Step 4: Simplify right side
    3,124.52x = 4,377,301.37
  5. Step 5: Solve for x
    x = 4,377,301.37/3,124.52
  6. Step 6: Final answer
    x = 1,400.95

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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.