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Finding the Fourth Proportional to 8,676.60, 12,988.12 and 5,546.20

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Solution

The fourth proportional to 8,676.60, 12,988.12 and 5,546.20 is: 8,302.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,676.60 : 12,988.12 = 5,546.20 : x
  2. Step 2: Convert to fraction form
    8,676.60/12,988.12 = 5,546.20/x
  3. Step 3: Cross multiply
    8,676.60x = 12,988.12 × 5,546.20
  4. Step 4: Simplify right side
    8,676.60x = 72,034,711.14
  5. Step 5: Solve for x
    x = 72,034,711.14/8,676.60
  6. Step 6: Final answer
    x = 8,302.18

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