Home / 3,940.40-5,910.60-2,634.80

Finding the Fourth Proportional to 3,940.40, 5,910.60 and 2,634.80

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Solution

The fourth proportional to 3,940.40, 5,910.60 and 2,634.80 is: 3,952.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.40 : 5,910.60 = 2,634.80 : x
  2. Step 2: Convert to fraction form
    3,940.40/5,910.60 = 2,634.80/x
  3. Step 3: Cross multiply
    3,940.40x = 5,910.60 × 2,634.80
  4. Step 4: Simplify right side
    3,940.40x = 15,573,248.88
  5. Step 5: Solve for x
    x = 15,573,248.88/3,940.40
  6. Step 6: Final answer
    x = 3,952.20

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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.