Home / 3,319.40-4,979.10-3,270.80

Finding the Fourth Proportional to 3,319.40, 4,979.10 and 3,270.80

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Solution

The fourth proportional to 3,319.40, 4,979.10 and 3,270.80 is: 4,906.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.40 : 4,979.10 = 3,270.80 : x
  2. Step 2: Convert to fraction form
    3,319.40/4,979.10 = 3,270.80/x
  3. Step 3: Cross multiply
    3,319.40x = 4,979.10 × 3,270.80
  4. Step 4: Simplify right side
    3,319.40x = 16,285,640.28
  5. Step 5: Solve for x
    x = 16,285,640.28/3,319.40
  6. Step 6: Final answer
    x = 4,906.20

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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.