Home / 6,982.85-9,635.31-3,998.13

Finding the Fourth Proportional to 6,982.85, 9,635.31 and 3,998.13

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Solution

The fourth proportional to 6,982.85, 9,635.31 and 3,998.13 is: 5,516.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,982.85 : 9,635.31 = 3,998.13 : x
  2. Step 2: Convert to fraction form
    6,982.85/9,635.31 = 3,998.13/x
  3. Step 3: Cross multiply
    6,982.85x = 9,635.31 × 3,998.13
  4. Step 4: Simplify right side
    6,982.85x = 38,523,221.97
  5. Step 5: Solve for x
    x = 38,523,221.97/6,982.85
  6. Step 6: Final answer
    x = 5,516.84

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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.