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Finding the Fourth Proportional to 3,699.81, 5,104.89 and 2,127.87

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Solution

The fourth proportional to 3,699.81, 5,104.89 and 2,127.87 is: 2,935.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,699.81 : 5,104.89 = 2,127.87 : x
  2. Step 2: Convert to fraction form
    3,699.81/5,104.89 = 2,127.87/x
  3. Step 3: Cross multiply
    3,699.81x = 5,104.89 × 2,127.87
  4. Step 4: Simplify right side
    3,699.81x = 10,862,542.28
  5. Step 5: Solve for x
    x = 10,862,542.28/3,699.81
  6. Step 6: Final answer
    x = 2,935.97

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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.