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Finding the Fourth Proportional to 3,745, 5,167.62 and 2,172.52

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Solution

The fourth proportional to 3,745, 5,167.62 and 2,172.52 is: 2,997.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,745 : 5,167.62 = 2,172.52 : x
  2. Step 2: Convert to fraction form
    3,745/5,167.62 = 2,172.52/x
  3. Step 3: Cross multiply
    3,745x = 5,167.62 × 2,172.52
  4. Step 4: Simplify right side
    3,745x = 11,226,757.80
  5. Step 5: Solve for x
    x = 11,226,757.80/3,745
  6. Step 6: Final answer
    x = 2,997.80

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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.