Home / 3,960.75-5,939.07-2,111.37

Finding the Fourth Proportional to 3,960.75, 5,939.07 and 2,111.37

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Solution

The fourth proportional to 3,960.75, 5,939.07 and 2,111.37 is: 3,165.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.75 : 5,939.07 = 2,111.37 : x
  2. Step 2: Convert to fraction form
    3,960.75/5,939.07 = 2,111.37/x
  3. Step 3: Cross multiply
    3,960.75x = 5,939.07 × 2,111.37
  4. Step 4: Simplify right side
    3,960.75x = 12,539,555.91
  5. Step 5: Solve for x
    x = 12,539,555.91/3,960.75
  6. Step 6: Final answer
    x = 3,165.96

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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.