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Finding the Fourth Proportional to 8,236.62, 12,354.81 and 2,690.22

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Solution

The fourth proportional to 8,236.62, 12,354.81 and 2,690.22 is: 4,035.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,236.62 : 12,354.81 = 2,690.22 : x
  2. Step 2: Convert to fraction form
    8,236.62/12,354.81 = 2,690.22/x
  3. Step 3: Cross multiply
    8,236.62x = 12,354.81 × 2,690.22
  4. Step 4: Simplify right side
    8,236.62x = 33,237,156.96
  5. Step 5: Solve for x
    x = 33,237,156.96/8,236.62
  6. Step 6: Final answer
    x = 4,035.29

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1.5x scale

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.