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Finding the Fourth Proportional to 8,481.63, 12,722.46 and 2,638.24

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Solution

The fourth proportional to 8,481.63, 12,722.46 and 2,638.24 is: 3,957.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,481.63 : 12,722.46 = 2,638.24 : x
  2. Step 2: Convert to fraction form
    8,481.63/12,722.46 = 2,638.24/x
  3. Step 3: Cross multiply
    8,481.63x = 12,722.46 × 2,638.24
  4. Step 4: Simplify right side
    8,481.63x = 33,564,902.87
  5. Step 5: Solve for x
    x = 33,564,902.87/8,481.63
  6. Step 6: Final answer
    x = 3,957.36

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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.