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Finding the Fourth Proportional to 3,958.88, 5,936.54 and 2,109.51

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Solution

The fourth proportional to 3,958.88, 5,936.54 and 2,109.51 is: 3,163.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,958.88 : 5,936.54 = 2,109.51 : x
  2. Step 2: Convert to fraction form
    3,958.88/5,936.54 = 2,109.51/x
  3. Step 3: Cross multiply
    3,958.88x = 5,936.54 × 2,109.51
  4. Step 4: Simplify right side
    3,958.88x = 12,523,179.95
  5. Step 5: Solve for x
    x = 12,523,179.95/3,958.88
  6. Step 6: Final answer
    x = 3,163.32

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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.