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Finding the Fourth Proportional to 8,976.31, 12,388.79 and 6,847.82

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Solution

The fourth proportional to 8,976.31, 12,388.79 and 6,847.82 is: 9,451.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.31 : 12,388.79 = 6,847.82 : x
  2. Step 2: Convert to fraction form
    8,976.31/12,388.79 = 6,847.82/x
  3. Step 3: Cross multiply
    8,976.31x = 12,388.79 × 6,847.82
  4. Step 4: Simplify right side
    8,976.31x = 84,836,138.73
  5. Step 5: Solve for x
    x = 84,836,138.73/8,976.31
  6. Step 6: Final answer
    x = 9,451.12

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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.