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Finding the Fourth Proportional to 9,151.92, 12,631.68 and 6,910.92

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Solution

The fourth proportional to 9,151.92, 12,631.68 and 6,910.92 is: 9,538.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,151.92 : 12,631.68 = 6,910.92 : x
  2. Step 2: Convert to fraction form
    9,151.92/12,631.68 = 6,910.92/x
  3. Step 3: Cross multiply
    9,151.92x = 12,631.68 × 6,910.92
  4. Step 4: Simplify right side
    9,151.92x = 87,296,529.95
  5. Step 5: Solve for x
    x = 87,296,529.95/9,151.92
  6. Step 6: Final answer
    x = 9,538.60

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Double scale
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1.5x scale

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.