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Finding the Fourth Proportional to 8,090.62, 12,138.84 and 2,826.40

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Solution

The fourth proportional to 8,090.62, 12,138.84 and 2,826.40 is: 4,240.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,090.62 : 12,138.84 = 2,826.40 : x
  2. Step 2: Convert to fraction form
    8,090.62/12,138.84 = 2,826.40/x
  3. Step 3: Cross multiply
    8,090.62x = 12,138.84 × 2,826.40
  4. Step 4: Simplify right side
    8,090.62x = 34,309,217.38
  5. Step 5: Solve for x
    x = 34,309,217.38/8,090.62
  6. Step 6: Final answer
    x = 4,240.62

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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.