Home / 3,963.20-5,470.34-2,391.39

Finding the Fourth Proportional to 3,963.20, 5,470.34 and 2,391.39

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Solution

The fourth proportional to 3,963.20, 5,470.34 and 2,391.39 is: 3,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,963.20 : 5,470.34 = 2,391.39 : x
  2. Step 2: Convert to fraction form
    3,963.20/5,470.34 = 2,391.39/x
  3. Step 3: Cross multiply
    3,963.20x = 5,470.34 × 2,391.39
  4. Step 4: Simplify right side
    3,963.20x = 13,081,704.42
  5. Step 5: Solve for x
    x = 13,081,704.42/3,963.20
  6. Step 6: Final answer
    x = 3,300.80

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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.