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Finding the Fourth Proportional to 3,995.56, 5,500.56 and 2,999.17

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Solution

The fourth proportional to 3,995.56, 5,500.56 and 2,999.17 is: 4,128.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,995.56 : 5,500.56 = 2,999.17 : x
  2. Step 2: Convert to fraction form
    3,995.56/5,500.56 = 2,999.17/x
  3. Step 3: Cross multiply
    3,995.56x = 5,500.56 × 2,999.17
  4. Step 4: Simplify right side
    3,995.56x = 16,497,114.54
  5. Step 5: Solve for x
    x = 16,497,114.54/3,995.56
  6. Step 6: Final answer
    x = 4,128.86

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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.