Home / 8,261.78-12,396.92-5,490.36

Finding the Fourth Proportional to 8,261.78, 12,396.92 and 5,490.36

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Solution

The fourth proportional to 8,261.78, 12,396.92 and 5,490.36 is: 8,238.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,261.78 : 12,396.92 = 5,490.36 : x
  2. Step 2: Convert to fraction form
    8,261.78/12,396.92 = 5,490.36/x
  3. Step 3: Cross multiply
    8,261.78x = 12,396.92 × 5,490.36
  4. Step 4: Simplify right side
    8,261.78x = 68,063,553.69
  5. Step 5: Solve for x
    x = 68,063,553.69/8,261.78
  6. Step 6: Final answer
    x = 8,238.36

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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.