Home / 3,391.92-5,088.12-2,161.80

Finding the Fourth Proportional to 3,391.92, 5,088.12 and 2,161.80

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Solution

The fourth proportional to 3,391.92, 5,088.12 and 2,161.80 is: 3,242.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.92 : 5,088.12 = 2,161.80 : x
  2. Step 2: Convert to fraction form
    3,391.92/5,088.12 = 2,161.80/x
  3. Step 3: Cross multiply
    3,391.92x = 5,088.12 × 2,161.80
  4. Step 4: Simplify right side
    3,391.92x = 10,999,497.82
  5. Step 5: Solve for x
    x = 10,999,497.82/3,391.92
  6. Step 6: Final answer
    x = 3,242.85

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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.