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Finding the Fourth Proportional to 3,710.87, 5,121.78 and 3,593.78

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Solution

The fourth proportional to 3,710.87, 5,121.78 and 3,593.78 is: 4,960.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,710.87 : 5,121.78 = 3,593.78 : x
  2. Step 2: Convert to fraction form
    3,710.87/5,121.78 = 3,593.78/x
  3. Step 3: Cross multiply
    3,710.87x = 5,121.78 × 3,593.78
  4. Step 4: Simplify right side
    3,710.87x = 18,406,550.53
  5. Step 5: Solve for x
    x = 18,406,550.53/3,710.87
  6. Step 6: Final answer
    x = 4,960.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.