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Finding the Fourth Proportional to 8,518.80, 12,780.22 and 2,675.41

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Solution

The fourth proportional to 8,518.80, 12,780.22 and 2,675.41 is: 4,013.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.80 : 12,780.22 = 2,675.41 : x
  2. Step 2: Convert to fraction form
    8,518.80/12,780.22 = 2,675.41/x
  3. Step 3: Cross multiply
    8,518.80x = 12,780.22 × 2,675.41
  4. Step 4: Simplify right side
    8,518.80x = 34,192,289.75
  5. Step 5: Solve for x
    x = 34,192,289.75/8,518.80
  6. Step 6: Final answer
    x = 4,013.75

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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.