Home / 3,400.92-5,090.78-2,618.90

Finding the Fourth Proportional to 3,400.92, 5,090.78 and 2,618.90

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Solution

The fourth proportional to 3,400.92, 5,090.78 and 2,618.90 is: 3,920.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.92 : 5,090.78 = 2,618.90 : x
  2. Step 2: Convert to fraction form
    3,400.92/5,090.78 = 2,618.90/x
  3. Step 3: Cross multiply
    3,400.92x = 5,090.78 × 2,618.90
  4. Step 4: Simplify right side
    3,400.92x = 13,332,205.19
  5. Step 5: Solve for x
    x = 13,332,205.19/3,400.92
  6. Step 6: Final answer
    x = 3,920.18

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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.