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Finding the Fourth Proportional to 8,363.87, 12,546.41 and 2,817.21

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Solution

The fourth proportional to 8,363.87, 12,546.41 and 2,817.21 is: 4,226.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,363.87 : 12,546.41 = 2,817.21 : x
  2. Step 2: Convert to fraction form
    8,363.87/12,546.41 = 2,817.21/x
  3. Step 3: Cross multiply
    8,363.87x = 12,546.41 × 2,817.21
  4. Step 4: Simplify right side
    8,363.87x = 35,345,857.63
  5. Step 5: Solve for x
    x = 35,345,857.63/8,363.87
  6. Step 6: Final answer
    x = 4,226.02

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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.