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Finding the Fourth Proportional to 3,963.52, 5,470.44 and 2,391.76

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Solution

The fourth proportional to 3,963.52, 5,470.44 and 2,391.76 is: 3,301.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,963.52 : 5,470.44 = 2,391.76 : x
  2. Step 2: Convert to fraction form
    3,963.52/5,470.44 = 2,391.76/x
  3. Step 3: Cross multiply
    3,963.52x = 5,470.44 × 2,391.76
  4. Step 4: Simplify right side
    3,963.52x = 13,083,979.57
  5. Step 5: Solve for x
    x = 13,083,979.57/3,963.52
  6. Step 6: Final answer
    x = 3,301.10

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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.