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Finding the Fourth Proportional to 4,000.36, 5,520.36 and 2,231.92

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Solution

The fourth proportional to 4,000.36, 5,520.36 and 2,231.92 is: 3,079.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,000.36 : 5,520.36 = 2,231.92 : x
  2. Step 2: Convert to fraction form
    4,000.36/5,520.36 = 2,231.92/x
  3. Step 3: Cross multiply
    4,000.36x = 5,520.36 × 2,231.92
  4. Step 4: Simplify right side
    4,000.36x = 12,321,001.89
  5. Step 5: Solve for x
    x = 12,321,001.89/4,000.36
  6. Step 6: Final answer
    x = 3,079.97

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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.