Home / 3,939.76-5,907.92-2,090.46

Finding the Fourth Proportional to 3,939.76, 5,907.92 and 2,090.46

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Solution

The fourth proportional to 3,939.76, 5,907.92 and 2,090.46 is: 3,134.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.76 : 5,907.92 = 2,090.46 : x
  2. Step 2: Convert to fraction form
    3,939.76/5,907.92 = 2,090.46/x
  3. Step 3: Cross multiply
    3,939.76x = 5,907.92 × 2,090.46
  4. Step 4: Simplify right side
    3,939.76x = 12,350,270.44
  5. Step 5: Solve for x
    x = 12,350,270.44/3,939.76
  6. Step 6: Final answer
    x = 3,134.78

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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.