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Finding the Fourth Proportional to 8,856.92, 12,223.42 and 6,614.91

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Solution

The fourth proportional to 8,856.92, 12,223.42 and 6,614.91 is: 9,129.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,856.92 : 12,223.42 = 6,614.91 : x
  2. Step 2: Convert to fraction form
    8,856.92/12,223.42 = 6,614.91/x
  3. Step 3: Cross multiply
    8,856.92x = 12,223.42 × 6,614.91
  4. Step 4: Simplify right side
    8,856.92x = 80,856,797.69
  5. Step 5: Solve for x
    x = 80,856,797.69/8,856.92
  6. Step 6: Final answer
    x = 9,129.22

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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.