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Finding the Fourth Proportional to 8,459.92, 12,692.72 and 2,917.09

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Solution

The fourth proportional to 8,459.92, 12,692.72 and 2,917.09 is: 4,376.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,459.92 : 12,692.72 = 2,917.09 : x
  2. Step 2: Convert to fraction form
    8,459.92/12,692.72 = 2,917.09/x
  3. Step 3: Cross multiply
    8,459.92x = 12,692.72 × 2,917.09
  4. Step 4: Simplify right side
    8,459.92x = 37,025,806.58
  5. Step 5: Solve for x
    x = 37,025,806.58/8,459.92
  6. Step 6: Final answer
    x = 4,376.61

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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.