Home / 3,999.20-5,517.96-2,427.28

Finding the Fourth Proportional to 3,999.20, 5,517.96 and 2,427.28

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Solution

The fourth proportional to 3,999.20, 5,517.96 and 2,427.28 is: 3,349.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.20 : 5,517.96 = 2,427.28 : x
  2. Step 2: Convert to fraction form
    3,999.20/5,517.96 = 2,427.28/x
  3. Step 3: Cross multiply
    3,999.20x = 5,517.96 × 2,427.28
  4. Step 4: Simplify right side
    3,999.20x = 13,393,633.95
  5. Step 5: Solve for x
    x = 13,393,633.95/3,999.20
  6. Step 6: Final answer
    x = 3,349.08

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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.