Home / 3,982.68-5,521.14-3,771.90

Finding the Fourth Proportional to 3,982.68, 5,521.14 and 3,771.90

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Solution

The fourth proportional to 3,982.68, 5,521.14 and 3,771.90 is: 5,228.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.68 : 5,521.14 = 3,771.90 : x
  2. Step 2: Convert to fraction form
    3,982.68/5,521.14 = 3,771.90/x
  3. Step 3: Cross multiply
    3,982.68x = 5,521.14 × 3,771.90
  4. Step 4: Simplify right side
    3,982.68x = 20,825,187.97
  5. Step 5: Solve for x
    x = 20,825,187.97/3,982.68
  6. Step 6: Final answer
    x = 5,228.94

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.