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Finding the Fourth Proportional to 3,999.94, 5,520.23 and 2,231.98

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Solution

The fourth proportional to 3,999.94, 5,520.23 and 2,231.98 is: 3,080.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.94 : 5,520.23 = 2,231.98 : x
  2. Step 2: Convert to fraction form
    3,999.94/5,520.23 = 2,231.98/x
  3. Step 3: Cross multiply
    3,999.94x = 5,520.23 × 2,231.98
  4. Step 4: Simplify right side
    3,999.94x = 12,321,042.96
  5. Step 5: Solve for x
    x = 12,321,042.96/3,999.94
  6. Step 6: Final answer
    x = 3,080.31

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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.