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Finding the Fourth Proportional to 8,984.64, 12,400.38 and 6,757.68

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Solution

The fourth proportional to 8,984.64, 12,400.38 and 6,757.68 is: 9,326.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,984.64 : 12,400.38 = 6,757.68 : x
  2. Step 2: Convert to fraction form
    8,984.64/12,400.38 = 6,757.68/x
  3. Step 3: Cross multiply
    8,984.64x = 12,400.38 × 6,757.68
  4. Step 4: Simplify right side
    8,984.64x = 83,797,799.92
  5. Step 5: Solve for x
    x = 83,797,799.92/8,984.64
  6. Step 6: Final answer
    x = 9,326.78

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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.