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Finding the Fourth Proportional to 8,820.64, 13,236.72 and 4,204

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Solution

The fourth proportional to 8,820.64, 13,236.72 and 4,204 is: 6,308.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,820.64 : 13,236.72 = 4,204 : x
  2. Step 2: Convert to fraction form
    8,820.64/13,236.72 = 4,204/x
  3. Step 3: Cross multiply
    8,820.64x = 13,236.72 × 4,204
  4. Step 4: Simplify right side
    8,820.64x = 55,647,170.88
  5. Step 5: Solve for x
    x = 55,647,170.88/8,820.64
  6. Step 6: Final answer
    x = 6,308.75

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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.