Home / 7,819.38-11,731.82-5,197.30

Finding the Fourth Proportional to 7,819.38, 11,731.82 and 5,197.30

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Solution

The fourth proportional to 7,819.38, 11,731.82 and 5,197.30 is: 7,797.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.38 : 11,731.82 = 5,197.30 : x
  2. Step 2: Convert to fraction form
    7,819.38/11,731.82 = 5,197.30/x
  3. Step 3: Cross multiply
    7,819.38x = 11,731.82 × 5,197.30
  4. Step 4: Simplify right side
    7,819.38x = 60,973,729.43
  5. Step 5: Solve for x
    x = 60,973,729.43/7,819.38
  6. Step 6: Final answer
    x = 7,797.78

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1.5x scale

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.