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Finding the Fourth Proportional to 8,469.64, 12,705.30 and 3,540.82

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Solution

The fourth proportional to 8,469.64, 12,705.30 and 3,540.82 is: 5,311.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,469.64 : 12,705.30 = 3,540.82 : x
  2. Step 2: Convert to fraction form
    8,469.64/12,705.30 = 3,540.82/x
  3. Step 3: Cross multiply
    8,469.64x = 12,705.30 × 3,540.82
  4. Step 4: Simplify right side
    8,469.64x = 44,987,180.35
  5. Step 5: Solve for x
    x = 44,987,180.35/8,469.64
  6. Step 6: Final answer
    x = 5,311.58

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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.