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Finding the Fourth Proportional to 8,647.28, 11,934.04 and 6,760.56

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Solution

The fourth proportional to 8,647.28, 11,934.04 and 6,760.56 is: 9,330.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.28 : 11,934.04 = 6,760.56 : x
  2. Step 2: Convert to fraction form
    8,647.28/11,934.04 = 6,760.56/x
  3. Step 3: Cross multiply
    8,647.28x = 11,934.04 × 6,760.56
  4. Step 4: Simplify right side
    8,647.28x = 80,680,793.46
  5. Step 5: Solve for x
    x = 80,680,793.46/8,647.28
  6. Step 6: Final answer
    x = 9,330.19

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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.