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Finding the Fourth Proportional to 3,805.71, 5,251.98 and 2,127.30

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Solution

The fourth proportional to 3,805.71, 5,251.98 and 2,127.30 is: 2,935.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,805.71 : 5,251.98 = 2,127.30 : x
  2. Step 2: Convert to fraction form
    3,805.71/5,251.98 = 2,127.30/x
  3. Step 3: Cross multiply
    3,805.71x = 5,251.98 × 2,127.30
  4. Step 4: Simplify right side
    3,805.71x = 11,172,537.05
  5. Step 5: Solve for x
    x = 11,172,537.05/3,805.71
  6. Step 6: Final answer
    x = 2,935.73

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1.5x scale

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.