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Finding the Fourth Proportional to 3,819.80, 5,272.80 and 2,493.02

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Solution

The fourth proportional to 3,819.80, 5,272.80 and 2,493.02 is: 3,441.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.80 : 5,272.80 = 2,493.02 : x
  2. Step 2: Convert to fraction form
    3,819.80/5,272.80 = 2,493.02/x
  3. Step 3: Cross multiply
    3,819.80x = 5,272.80 × 2,493.02
  4. Step 4: Simplify right side
    3,819.80x = 13,145,195.86
  5. Step 5: Solve for x
    x = 13,145,195.86/3,819.80
  6. Step 6: Final answer
    x = 3,441.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.