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Finding the Fourth Proportional to 10,879.11, 16,306.08 and 4,947.12

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Solution

The fourth proportional to 10,879.11, 16,306.08 and 4,947.12 is: 7,414.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879.11 : 16,306.08 = 4,947.12 : x
  2. Step 2: Convert to fraction form
    10,879.11/16,306.08 = 4,947.12/x
  3. Step 3: Cross multiply
    10,879.11x = 16,306.08 × 4,947.12
  4. Step 4: Simplify right side
    10,879.11x = 80,668,134.49
  5. Step 5: Solve for x
    x = 80,668,134.49/10,879.11
  6. Step 6: Final answer
    x = 7,414.96

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1.5x scale

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.