Home / 3,999.96-5,520.27-2,231.70

Finding the Fourth Proportional to 3,999.96, 5,520.27 and 2,231.70

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Solution

The fourth proportional to 3,999.96, 5,520.27 and 2,231.70 is: 3,079.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.96 : 5,520.27 = 2,231.70 : x
  2. Step 2: Convert to fraction form
    3,999.96/5,520.27 = 2,231.70/x
  3. Step 3: Cross multiply
    3,999.96x = 5,520.27 × 2,231.70
  4. Step 4: Simplify right side
    3,999.96x = 12,319,586.56
  5. Step 5: Solve for x
    x = 12,319,586.56/3,999.96
  6. Step 6: Final answer
    x = 3,079.93

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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.