Home / 3,999.24-5,519.31-2,230.98

Finding the Fourth Proportional to 3,999.24, 5,519.31 and 2,230.98

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Solution

The fourth proportional to 3,999.24, 5,519.31 and 2,230.98 is: 3,078.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.24 : 5,519.31 = 2,230.98 : x
  2. Step 2: Convert to fraction form
    3,999.24/5,519.31 = 2,230.98/x
  3. Step 3: Cross multiply
    3,999.24x = 5,519.31 × 2,230.98
  4. Step 4: Simplify right side
    3,999.24x = 12,313,470.22
  5. Step 5: Solve for x
    x = 12,313,470.22/3,999.24
  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.