Home / 3,398.80-5,098.20-1,207.75

Finding the Fourth Proportional to 3,398.80, 5,098.20 and 1,207.75

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Solution

The fourth proportional to 3,398.80, 5,098.20 and 1,207.75 is: 1,811.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.80 : 5,098.20 = 1,207.75 : x
  2. Step 2: Convert to fraction form
    3,398.80/5,098.20 = 1,207.75/x
  3. Step 3: Cross multiply
    3,398.80x = 5,098.20 × 1,207.75
  4. Step 4: Simplify right side
    3,398.80x = 6,157,351.05
  5. Step 5: Solve for x
    x = 6,157,351.05/3,398.80
  6. Step 6: Final answer
    x = 1,811.63

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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.