Home / 3,439.72-5,161.20-1,247.86

Finding the Fourth Proportional to 3,439.72, 5,161.20 and 1,247.86

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Solution

The fourth proportional to 3,439.72, 5,161.20 and 1,247.86 is: 1,872.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.72 : 5,161.20 = 1,247.86 : x
  2. Step 2: Convert to fraction form
    3,439.72/5,161.20 = 1,247.86/x
  3. Step 3: Cross multiply
    3,439.72x = 5,161.20 × 1,247.86
  4. Step 4: Simplify right side
    3,439.72x = 6,440,455.03
  5. Step 5: Solve for x
    x = 6,440,455.03/3,439.72
  6. Step 6: Final answer
    x = 1,872.38

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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.