Home / 3,999.68-5,519.43-2,231.58

Finding the Fourth Proportional to 3,999.68, 5,519.43 and 2,231.58

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Solution

The fourth proportional to 3,999.68, 5,519.43 and 2,231.58 is: 3,079.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.68 : 5,519.43 = 2,231.58 : x
  2. Step 2: Convert to fraction form
    3,999.68/5,519.43 = 2,231.58/x
  3. Step 3: Cross multiply
    3,999.68x = 5,519.43 × 2,231.58
  4. Step 4: Simplify right side
    3,999.68x = 12,317,049.60
  5. Step 5: Solve for x
    x = 12,317,049.60/3,999.68
  6. Step 6: Final answer
    x = 3,079.51

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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.