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Finding the Fourth Proportional to 8,963.60, 13,443.78 and 3,968.22

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Solution

The fourth proportional to 8,963.60, 13,443.78 and 3,968.22 is: 5,951.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,963.60 : 13,443.78 = 3,968.22 : x
  2. Step 2: Convert to fraction form
    8,963.60/13,443.78 = 3,968.22/x
  3. Step 3: Cross multiply
    8,963.60x = 13,443.78 × 3,968.22
  4. Step 4: Simplify right side
    8,963.60x = 53,347,876.67
  5. Step 5: Solve for x
    x = 53,347,876.67/8,963.60
  6. Step 6: Final answer
    x = 5,951.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.