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Finding the Fourth Proportional to 2,046.18, 3,069.20 and 891.92

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Solution

The fourth proportional to 2,046.18, 3,069.20 and 891.92 is: 1,337.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,046.18 : 3,069.20 = 891.92 : x
  2. Step 2: Convert to fraction form
    2,046.18/3,069.20 = 891.92/x
  3. Step 3: Cross multiply
    2,046.18x = 3,069.20 × 891.92
  4. Step 4: Simplify right side
    2,046.18x = 2,737,480.86
  5. Step 5: Solve for x
    x = 2,737,480.86/2,046.18
  6. Step 6: Final answer
    x = 1,337.85

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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.