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Finding the Fourth Proportional to 8,960.91, 12,330.62 and 8,122.56

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Solution

The fourth proportional to 8,960.91, 12,330.62 and 8,122.56 is: 11,177.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,960.91 : 12,330.62 = 8,122.56 : x
  2. Step 2: Convert to fraction form
    8,960.91/12,330.62 = 8,122.56/x
  3. Step 3: Cross multiply
    8,960.91x = 12,330.62 × 8,122.56
  4. Step 4: Simplify right side
    8,960.91x = 100,156,160.17
  5. Step 5: Solve for x
    x = 100,156,160.17/8,960.91
  6. Step 6: Final answer
    x = 11,177.01

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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.