Home / 3,425.60-5,131.20-2,691.68

Finding the Fourth Proportional to 3,425.60, 5,131.20 and 2,691.68

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Solution

The fourth proportional to 3,425.60, 5,131.20 and 2,691.68 is: 4,031.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.60 : 5,131.20 = 2,691.68 : x
  2. Step 2: Convert to fraction form
    3,425.60/5,131.20 = 2,691.68/x
  3. Step 3: Cross multiply
    3,425.60x = 5,131.20 × 2,691.68
  4. Step 4: Simplify right side
    3,425.60x = 13,811,548.42
  5. Step 5: Solve for x
    x = 13,811,548.42/3,425.60
  6. Step 6: Final answer
    x = 4,031.86

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1.5x scale

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.