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Finding the Fourth Proportional to 8,239.78, 12,361.56 and 2,396.44

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Solution

The fourth proportional to 8,239.78, 12,361.56 and 2,396.44 is: 3,595.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.78 : 12,361.56 = 2,396.44 : x
  2. Step 2: Convert to fraction form
    8,239.78/12,361.56 = 2,396.44/x
  3. Step 3: Cross multiply
    8,239.78x = 12,361.56 × 2,396.44
  4. Step 4: Simplify right side
    8,239.78x = 29,623,736.85
  5. Step 5: Solve for x
    x = 29,623,736.85/8,239.78
  6. Step 6: Final answer
    x = 3,595.21

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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.