Home / 3,105.60-4,654.40-1,372.80

Finding the Fourth Proportional to 3,105.60, 4,654.40 and 1,372.80

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Solution

The fourth proportional to 3,105.60, 4,654.40 and 1,372.80 is: 2,057.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.60 : 4,654.40 = 1,372.80 : x
  2. Step 2: Convert to fraction form
    3,105.60/4,654.40 = 1,372.80/x
  3. Step 3: Cross multiply
    3,105.60x = 4,654.40 × 1,372.80
  4. Step 4: Simplify right side
    3,105.60x = 6,389,560.32
  5. Step 5: Solve for x
    x = 6,389,560.32/3,105.60
  6. Step 6: Final answer
    x = 2,057.43

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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.