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Finding the Fourth Proportional to 8,266.72, 12,390 and 6,327.04

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Solution

The fourth proportional to 8,266.72, 12,390 and 6,327.04 is: 9,482.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,266.72 : 12,390 = 6,327.04 : x
  2. Step 2: Convert to fraction form
    8,266.72/12,390 = 6,327.04/x
  3. Step 3: Cross multiply
    8,266.72x = 12,390 × 6,327.04
  4. Step 4: Simplify right side
    8,266.72x = 78,392,025.60
  5. Step 5: Solve for x
    x = 78,392,025.60/8,266.72
  6. Step 6: Final answer
    x = 9,482.85

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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.