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Finding the Fourth Proportional to 8,812.31, 13,207.07 and 6,724.61

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Solution

The fourth proportional to 8,812.31, 13,207.07 and 6,724.61 is: 10,078.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.31 : 13,207.07 = 6,724.61 : x
  2. Step 2: Convert to fraction form
    8,812.31/13,207.07 = 6,724.61/x
  3. Step 3: Cross multiply
    8,812.31x = 13,207.07 × 6,724.61
  4. Step 4: Simplify right side
    8,812.31x = 88,812,361.37
  5. Step 5: Solve for x
    x = 88,812,361.37/8,812.31
  6. Step 6: Final answer
    x = 10,078.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.