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Finding the Fourth Proportional to 8,861.86, 12,217.96 and 7,262.65

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Solution

The fourth proportional to 8,861.86, 12,217.96 and 7,262.65 is: 10,013.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.86 : 12,217.96 = 7,262.65 : x
  2. Step 2: Convert to fraction form
    8,861.86/12,217.96 = 7,262.65/x
  3. Step 3: Cross multiply
    8,861.86x = 12,217.96 × 7,262.65
  4. Step 4: Simplify right side
    8,861.86x = 88,734,730.88
  5. Step 5: Solve for x
    x = 88,734,730.88/8,861.86
  6. Step 6: Final answer
    x = 10,013.10

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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.