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Finding the Fourth Proportional to 8,452.58, 12,679.14 and 2,905.88

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Solution

The fourth proportional to 8,452.58, 12,679.14 and 2,905.88 is: 4,358.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,452.58 : 12,679.14 = 2,905.88 : x
  2. Step 2: Convert to fraction form
    8,452.58/12,679.14 = 2,905.88/x
  3. Step 3: Cross multiply
    8,452.58x = 12,679.14 × 2,905.88
  4. Step 4: Simplify right side
    8,452.58x = 36,843,995.95
  5. Step 5: Solve for x
    x = 36,843,995.95/8,452.58
  6. Step 6: Final answer
    x = 4,358.91

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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.