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Finding the Fourth Proportional to 3,892.98, 5,834.28 and 1,425.48

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Solution

The fourth proportional to 3,892.98, 5,834.28 and 1,425.48 is: 2,136.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.98 : 5,834.28 = 1,425.48 : x
  2. Step 2: Convert to fraction form
    3,892.98/5,834.28 = 1,425.48/x
  3. Step 3: Cross multiply
    3,892.98x = 5,834.28 × 1,425.48
  4. Step 4: Simplify right side
    3,892.98x = 8,316,649.45
  5. Step 5: Solve for x
    x = 8,316,649.45/3,892.98
  6. Step 6: Final answer
    x = 2,136.32

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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.