Home / 3,932.80-5,415.60-3,369.04

Finding the Fourth Proportional to 3,932.80, 5,415.60 and 3,369.04

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Solution

The fourth proportional to 3,932.80, 5,415.60 and 3,369.04 is: 4,639.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,932.80 : 5,415.60 = 3,369.04 : x
  2. Step 2: Convert to fraction form
    3,932.80/5,415.60 = 3,369.04/x
  3. Step 3: Cross multiply
    3,932.80x = 5,415.60 × 3,369.04
  4. Step 4: Simplify right side
    3,932.80x = 18,245,373.02
  5. Step 5: Solve for x
    x = 18,245,373.02/3,932.80
  6. Step 6: Final answer
    x = 4,639.28

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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.