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Finding the Fourth Proportional to 8,524.76, 12,788.72 and 2,679.80

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Solution

The fourth proportional to 8,524.76, 12,788.72 and 2,679.80 is: 4,020.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,524.76 : 12,788.72 = 2,679.80 : x
  2. Step 2: Convert to fraction form
    8,524.76/12,788.72 = 2,679.80/x
  3. Step 3: Cross multiply
    8,524.76x = 12,788.72 × 2,679.80
  4. Step 4: Simplify right side
    8,524.76x = 34,271,211.86
  5. Step 5: Solve for x
    x = 34,271,211.86/8,524.76
  6. Step 6: Final answer
    x = 4,020.20

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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.