Home / 3,999.20-5,519.27-2,230.97

Finding the Fourth Proportional to 3,999.20, 5,519.27 and 2,230.97

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Solution

The fourth proportional to 3,999.20, 5,519.27 and 2,230.97 is: 3,078.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.20 : 5,519.27 = 2,230.97 : x
  2. Step 2: Convert to fraction form
    3,999.20/5,519.27 = 2,230.97/x
  3. Step 3: Cross multiply
    3,999.20x = 5,519.27 × 2,230.97
  4. Step 4: Simplify right side
    3,999.20x = 12,313,303.77
  5. Step 5: Solve for x
    x = 12,313,303.77/3,999.20
  6. Step 6: Final answer
    x = 3,078.95

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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.