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Finding the Fourth Proportional to 5,469.60, 8,199.60 and 3,279.20

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Solution

The fourth proportional to 5,469.60, 8,199.60 and 3,279.20 is: 4,915.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,469.60 : 8,199.60 = 3,279.20 : x
  2. Step 2: Convert to fraction form
    5,469.60/8,199.60 = 3,279.20/x
  3. Step 3: Cross multiply
    5,469.60x = 8,199.60 × 3,279.20
  4. Step 4: Simplify right side
    5,469.60x = 26,888,128.32
  5. Step 5: Solve for x
    x = 26,888,128.32/5,469.60
  6. Step 6: Final answer
    x = 4,915.92

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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.