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Finding the Fourth Proportional to 8,481.70, 12,654.50 and 7,546.15

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Solution

The fourth proportional to 8,481.70, 12,654.50 and 7,546.15 is: 11,258.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,481.70 : 12,654.50 = 7,546.15 : x
  2. Step 2: Convert to fraction form
    8,481.70/12,654.50 = 7,546.15/x
  3. Step 3: Cross multiply
    8,481.70x = 12,654.50 × 7,546.15
  4. Step 4: Simplify right side
    8,481.70x = 95,492,755.18
  5. Step 5: Solve for x
    x = 95,492,755.18/8,481.70
  6. Step 6: Final answer
    x = 11,258.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.