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Finding the Fourth Proportional to 7,819.52, 10,791.02 and 4,462.78

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Solution

The fourth proportional to 7,819.52, 10,791.02 and 4,462.78 is: 6,158.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.52 : 10,791.02 = 4,462.78 : x
  2. Step 2: Convert to fraction form
    7,819.52/10,791.02 = 4,462.78/x
  3. Step 3: Cross multiply
    7,819.52x = 10,791.02 × 4,462.78
  4. Step 4: Simplify right side
    7,819.52x = 48,157,948.24
  5. Step 5: Solve for x
    x = 48,157,948.24/7,819.52
  6. Step 6: Final answer
    x = 6,158.68

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1.5x scale

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.