Home / 3,963.12-5,469.68-2,391.44

Finding the Fourth Proportional to 3,963.12, 5,469.68 and 2,391.44

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Solution

The fourth proportional to 3,963.12, 5,469.68 and 2,391.44 is: 3,300.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,963.12 : 5,469.68 = 2,391.44 : x
  2. Step 2: Convert to fraction form
    3,963.12/5,469.68 = 2,391.44/x
  3. Step 3: Cross multiply
    3,963.12x = 5,469.68 × 2,391.44
  4. Step 4: Simplify right side
    3,963.12x = 13,080,411.54
  5. Step 5: Solve for x
    x = 13,080,411.54/3,963.12
  6. Step 6: Final answer
    x = 3,300.53

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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.