Home / 3,936.84-5,905.88-1,163.78

Finding the Fourth Proportional to 3,936.84, 5,905.88 and 1,163.78

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Solution

The fourth proportional to 3,936.84, 5,905.88 and 1,163.78 is: 1,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.84 : 5,905.88 = 1,163.78 : x
  2. Step 2: Convert to fraction form
    3,936.84/5,905.88 = 1,163.78/x
  3. Step 3: Cross multiply
    3,936.84x = 5,905.88 × 1,163.78
  4. Step 4: Simplify right side
    3,936.84x = 6,873,145.03
  5. Step 5: Solve for x
    x = 6,873,145.03/3,936.84
  6. Step 6: Final answer
    x = 1,745.85

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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.