Home / 3,432.60-5,145.70-2,691.80

Finding the Fourth Proportional to 3,432.60, 5,145.70 and 2,691.80

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Solution

The fourth proportional to 3,432.60, 5,145.70 and 2,691.80 is: 4,035.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,432.60 : 5,145.70 = 2,691.80 : x
  2. Step 2: Convert to fraction form
    3,432.60/5,145.70 = 2,691.80/x
  3. Step 3: Cross multiply
    3,432.60x = 5,145.70 × 2,691.80
  4. Step 4: Simplify right side
    3,432.60x = 13,851,195.26
  5. Step 5: Solve for x
    x = 13,851,195.26/3,432.60
  6. Step 6: Final answer
    x = 4,035.19

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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.