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Finding the Fourth Proportional to 3,400.92, 5,100.90 and 1,092.12

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Solution

The fourth proportional to 3,400.92, 5,100.90 and 1,092.12 is: 1,638.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.92 : 5,100.90 = 1,092.12 : x
  2. Step 2: Convert to fraction form
    3,400.92/5,100.90 = 1,092.12/x
  3. Step 3: Cross multiply
    3,400.92x = 5,100.90 × 1,092.12
  4. Step 4: Simplify right side
    3,400.92x = 5,570,794.91
  5. Step 5: Solve for x
    x = 5,570,794.91/3,400.92
  6. Step 6: Final answer
    x = 1,638.03

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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.