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Finding the Fourth Proportional to 8,627.67, 12,939.12 and 2,386.17

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Solution

The fourth proportional to 8,627.67, 12,939.12 and 2,386.17 is: 3,578.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,627.67 : 12,939.12 = 2,386.17 : x
  2. Step 2: Convert to fraction form
    8,627.67/12,939.12 = 2,386.17/x
  3. Step 3: Cross multiply
    8,627.67x = 12,939.12 × 2,386.17
  4. Step 4: Simplify right side
    8,627.67x = 30,874,939.97
  5. Step 5: Solve for x
    x = 30,874,939.97/8,627.67
  6. Step 6: Final answer
    x = 3,578.60

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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.