Home / 6,982.20-9,635.28-3,997.79

Finding the Fourth Proportional to 6,982.20, 9,635.28 and 3,997.79

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Solution

The fourth proportional to 6,982.20, 9,635.28 and 3,997.79 is: 5,516.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,982.20 : 9,635.28 = 3,997.79 : x
  2. Step 2: Convert to fraction form
    6,982.20/9,635.28 = 3,997.79/x
  3. Step 3: Cross multiply
    6,982.20x = 9,635.28 × 3,997.79
  4. Step 4: Simplify right side
    6,982.20x = 38,519,777.85
  5. Step 5: Solve for x
    x = 38,519,777.85/6,982.20
  6. Step 6: Final answer
    x = 5,516.85

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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.