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Finding the Fourth Proportional to 8,481.60, 12,724.32 and 3,548.80

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Solution

The fourth proportional to 8,481.60, 12,724.32 and 3,548.80 is: 5,324.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,481.60 : 12,724.32 = 3,548.80 : x
  2. Step 2: Convert to fraction form
    8,481.60/12,724.32 = 3,548.80/x
  3. Step 3: Cross multiply
    8,481.60x = 12,724.32 × 3,548.80
  4. Step 4: Simplify right side
    8,481.60x = 45,156,066.82
  5. Step 5: Solve for x
    x = 45,156,066.82/8,481.60
  6. Step 6: Final answer
    x = 5,324.00

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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.