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Finding the Fourth Proportional to 4,000, 5,520.01 and 2,231.72

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Solution

The fourth proportional to 4,000, 5,520.01 and 2,231.72 is: 3,079.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,000 : 5,520.01 = 2,231.72 : x
  2. Step 2: Convert to fraction form
    4,000/5,520.01 = 2,231.72/x
  3. Step 3: Cross multiply
    4,000x = 5,520.01 × 2,231.72
  4. Step 4: Simplify right side
    4,000x = 12,319,116.72
  5. Step 5: Solve for x
    x = 12,319,116.72/4,000
  6. Step 6: Final answer
    x = 3,079.78

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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.