Home / 3,440.20-5,160.30-3,418.60

Finding the Fourth Proportional to 3,440.20, 5,160.30 and 3,418.60

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Solution

The fourth proportional to 3,440.20, 5,160.30 and 3,418.60 is: 5,127.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,440.20 : 5,160.30 = 3,418.60 : x
  2. Step 2: Convert to fraction form
    3,440.20/5,160.30 = 3,418.60/x
  3. Step 3: Cross multiply
    3,440.20x = 5,160.30 × 3,418.60
  4. Step 4: Simplify right side
    3,440.20x = 17,641,001.58
  5. Step 5: Solve for x
    x = 17,641,001.58/3,440.20
  6. Step 6: Final answer
    x = 5,127.90

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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.