Home / 3,939.62-5,903.84-2,185.38

Finding the Fourth Proportional to 3,939.62, 5,903.84 and 2,185.38

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Solution

The fourth proportional to 3,939.62, 5,903.84 and 2,185.38 is: 3,274.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.62 : 5,903.84 = 2,185.38 : x
  2. Step 2: Convert to fraction form
    3,939.62/5,903.84 = 2,185.38/x
  3. Step 3: Cross multiply
    3,939.62x = 5,903.84 × 2,185.38
  4. Step 4: Simplify right side
    3,939.62x = 12,902,133.86
  5. Step 5: Solve for x
    x = 12,902,133.86/3,939.62
  6. Step 6: Final answer
    x = 3,274.97

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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.