Home / 3,679.86-5,516.04-2,119.38

Finding the Fourth Proportional to 3,679.86, 5,516.04 and 2,119.38

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Solution

The fourth proportional to 3,679.86, 5,516.04 and 2,119.38 is: 3,176.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.86 : 5,516.04 = 2,119.38 : x
  2. Step 2: Convert to fraction form
    3,679.86/5,516.04 = 2,119.38/x
  3. Step 3: Cross multiply
    3,679.86x = 5,516.04 × 2,119.38
  4. Step 4: Simplify right side
    3,679.86x = 11,690,584.86
  5. Step 5: Solve for x
    x = 11,690,584.86/3,679.86
  6. Step 6: Final answer
    x = 3,176.91

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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.