Home / 3,999.48-5,519.28-2,321.88

Finding the Fourth Proportional to 3,999.48, 5,519.28 and 2,321.88

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Solution

The fourth proportional to 3,999.48, 5,519.28 and 2,321.88 is: 3,204.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.48 : 5,519.28 = 2,321.88 : x
  2. Step 2: Convert to fraction form
    3,999.48/5,519.28 = 2,321.88/x
  3. Step 3: Cross multiply
    3,999.48x = 5,519.28 × 2,321.88
  4. Step 4: Simplify right side
    3,999.48x = 12,815,105.85
  5. Step 5: Solve for x
    x = 12,815,105.85/3,999.48
  6. Step 6: Final answer
    x = 3,204.19

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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.