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Finding the Fourth Proportional to 8,318.62, 12,387.32 and 8,226.57

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Solution

The fourth proportional to 8,318.62, 12,387.32 and 8,226.57 is: 12,250.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.62 : 12,387.32 = 8,226.57 : x
  2. Step 2: Convert to fraction form
    8,318.62/12,387.32 = 8,226.57/x
  3. Step 3: Cross multiply
    8,318.62x = 12,387.32 × 8,226.57
  4. Step 4: Simplify right side
    8,318.62x = 101,905,175.66
  5. Step 5: Solve for x
    x = 101,905,175.66/8,318.62
  6. Step 6: Final answer
    x = 12,250.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.