Home / 3,936.88-5,906.12-1,628.38

Finding the Fourth Proportional to 3,936.88, 5,906.12 and 1,628.38

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Solution

The fourth proportional to 3,936.88, 5,906.12 and 1,628.38 is: 2,442.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.88 : 5,906.12 = 1,628.38 : x
  2. Step 2: Convert to fraction form
    3,936.88/5,906.12 = 1,628.38/x
  3. Step 3: Cross multiply
    3,936.88x = 5,906.12 × 1,628.38
  4. Step 4: Simplify right side
    3,936.88x = 9,617,407.69
  5. Step 5: Solve for x
    x = 9,617,407.69/3,936.88
  6. Step 6: Final answer
    x = 2,442.90

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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.