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Finding the Fourth Proportional to 8,459.64, 12,692.70 and 4,076.73

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Solution

The fourth proportional to 8,459.64, 12,692.70 and 4,076.73 is: 6,116.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,459.64 : 12,692.70 = 4,076.73 : x
  2. Step 2: Convert to fraction form
    8,459.64/12,692.70 = 4,076.73/x
  3. Step 3: Cross multiply
    8,459.64x = 12,692.70 × 4,076.73
  4. Step 4: Simplify right side
    8,459.64x = 51,744,710.87
  5. Step 5: Solve for x
    x = 51,744,710.87/8,459.64
  6. Step 6: Final answer
    x = 6,116.66

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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.