Home / 3,434.61-5,151.70-2,118.61

Finding the Fourth Proportional to 3,434.61, 5,151.70 and 2,118.61

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Solution

The fourth proportional to 3,434.61, 5,151.70 and 2,118.61 is: 3,177.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,434.61 : 5,151.70 = 2,118.61 : x
  2. Step 2: Convert to fraction form
    3,434.61/5,151.70 = 2,118.61/x
  3. Step 3: Cross multiply
    3,434.61x = 5,151.70 × 2,118.61
  4. Step 4: Simplify right side
    3,434.61x = 10,914,443.14
  5. Step 5: Solve for x
    x = 10,914,443.14/3,434.61
  6. Step 6: Final answer
    x = 3,177.78

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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.