Home / 3,998.20-5,981.28-3,456.24

Finding the Fourth Proportional to 3,998.20, 5,981.28 and 3,456.24

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Solution

The fourth proportional to 3,998.20, 5,981.28 and 3,456.24 is: 5,170.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.20 : 5,981.28 = 3,456.24 : x
  2. Step 2: Convert to fraction form
    3,998.20/5,981.28 = 3,456.24/x
  3. Step 3: Cross multiply
    3,998.20x = 5,981.28 × 3,456.24
  4. Step 4: Simplify right side
    3,998.20x = 20,672,739.19
  5. Step 5: Solve for x
    x = 20,672,739.19/3,998.20
  6. Step 6: Final answer
    x = 5,170.51

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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.