Home / 3,963.69-5,470.38-2,391.75

Finding the Fourth Proportional to 3,963.69, 5,470.38 and 2,391.75

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Solution

The fourth proportional to 3,963.69, 5,470.38 and 2,391.75 is: 3,300.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,963.69 : 5,470.38 = 2,391.75 : x
  2. Step 2: Convert to fraction form
    3,963.69/5,470.38 = 2,391.75/x
  3. Step 3: Cross multiply
    3,963.69x = 5,470.38 × 2,391.75
  4. Step 4: Simplify right side
    3,963.69x = 13,083,781.37
  5. Step 5: Solve for x
    x = 13,083,781.37/3,963.69
  6. Step 6: Final answer
    x = 3,300.91

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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.