Home / 3,940.92-5,911.38-2,840.13

Finding the Fourth Proportional to 3,940.92, 5,911.38 and 2,840.13

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Solution

The fourth proportional to 3,940.92, 5,911.38 and 2,840.13 is: 4,260.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.92 : 5,911.38 = 2,840.13 : x
  2. Step 2: Convert to fraction form
    3,940.92/5,911.38 = 2,840.13/x
  3. Step 3: Cross multiply
    3,940.92x = 5,911.38 × 2,840.13
  4. Step 4: Simplify right side
    3,940.92x = 16,789,087.68
  5. Step 5: Solve for x
    x = 16,789,087.68/3,940.92
  6. Step 6: Final answer
    x = 4,260.20

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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.