Home / 3,531.97-4,872.81-2,115.68

Finding the Fourth Proportional to 3,531.97, 4,872.81 and 2,115.68

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Solution

The fourth proportional to 3,531.97, 4,872.81 and 2,115.68 is: 2,918.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,531.97 : 4,872.81 = 2,115.68 : x
  2. Step 2: Convert to fraction form
    3,531.97/4,872.81 = 2,115.68/x
  3. Step 3: Cross multiply
    3,531.97x = 4,872.81 × 2,115.68
  4. Step 4: Simplify right side
    3,531.97x = 10,309,306.66
  5. Step 5: Solve for x
    x = 10,309,306.66/3,531.97
  6. Step 6: Final answer
    x = 2,918.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.