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Finding the Fourth Proportional to 6,480.40, 8,943.60 and 3,963.64

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Solution

The fourth proportional to 6,480.40, 8,943.60 and 3,963.64 is: 5,470.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,480.40 : 8,943.60 = 3,963.64 : x
  2. Step 2: Convert to fraction form
    6,480.40/8,943.60 = 3,963.64/x
  3. Step 3: Cross multiply
    6,480.40x = 8,943.60 × 3,963.64
  4. Step 4: Simplify right side
    6,480.40x = 35,449,210.70
  5. Step 5: Solve for x
    x = 35,449,210.70/6,480.40
  6. Step 6: Final answer
    x = 5,470.22

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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.