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Finding the Fourth Proportional to 6,819.20, 10,231.20 and 2,924.80

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Solution

The fourth proportional to 6,819.20, 10,231.20 and 2,924.80 is: 4,388.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,819.20 : 10,231.20 = 2,924.80 : x
  2. Step 2: Convert to fraction form
    6,819.20/10,231.20 = 2,924.80/x
  3. Step 3: Cross multiply
    6,819.20x = 10,231.20 × 2,924.80
  4. Step 4: Simplify right side
    6,819.20x = 29,924,213.76
  5. Step 5: Solve for x
    x = 29,924,213.76/6,819.20
  6. Step 6: Final answer
    x = 4,388.23

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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.