Home / 4,138.20-6,207.30-3,418.20

Finding the Fourth Proportional to 4,138.20, 6,207.30 and 3,418.20

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Solution

The fourth proportional to 4,138.20, 6,207.30 and 3,418.20 is: 5,127.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,138.20 : 6,207.30 = 3,418.20 : x
  2. Step 2: Convert to fraction form
    4,138.20/6,207.30 = 3,418.20/x
  3. Step 3: Cross multiply
    4,138.20x = 6,207.30 × 3,418.20
  4. Step 4: Simplify right side
    4,138.20x = 21,217,792.86
  5. Step 5: Solve for x
    x = 21,217,792.86/4,138.20
  6. Step 6: Final answer
    x = 5,127.30

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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.