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Finding the Fourth Proportional to 8,206.78, 12,310.20 and 2,050.78

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Solution

The fourth proportional to 8,206.78, 12,310.20 and 2,050.78 is: 3,076.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,206.78 : 12,310.20 = 2,050.78 : x
  2. Step 2: Convert to fraction form
    8,206.78/12,310.20 = 2,050.78/x
  3. Step 3: Cross multiply
    8,206.78x = 12,310.20 × 2,050.78
  4. Step 4: Simplify right side
    8,206.78x = 25,245,511.96
  5. Step 5: Solve for x
    x = 25,245,511.96/8,206.78
  6. Step 6: Final answer
    x = 3,076.18

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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.