Home / 3,992.20-5,981.10-3,257.80

Finding the Fourth Proportional to 3,992.20, 5,981.10 and 3,257.80

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Solution

The fourth proportional to 3,992.20, 5,981.10 and 3,257.80 is: 4,880.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.20 : 5,981.10 = 3,257.80 : x
  2. Step 2: Convert to fraction form
    3,992.20/5,981.10 = 3,257.80/x
  3. Step 3: Cross multiply
    3,992.20x = 5,981.10 × 3,257.80
  4. Step 4: Simplify right side
    3,992.20x = 19,485,227.58
  5. Step 5: Solve for x
    x = 19,485,227.58/3,992.20
  6. Step 6: Final answer
    x = 4,880.82

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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.