Home / 3,999.54-5,519.35-2,231.15

Finding the Fourth Proportional to 3,999.54, 5,519.35 and 2,231.15

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Solution

The fourth proportional to 3,999.54, 5,519.35 and 2,231.15 is: 3,078.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.54 : 5,519.35 = 2,231.15 : x
  2. Step 2: Convert to fraction form
    3,999.54/5,519.35 = 2,231.15/x
  3. Step 3: Cross multiply
    3,999.54x = 5,519.35 × 2,231.15
  4. Step 4: Simplify right side
    3,999.54x = 12,314,472.94
  5. Step 5: Solve for x
    x = 12,314,472.94/3,999.54
  6. Step 6: Final answer
    x = 3,078.97

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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.