Home / 2,789.97-3,850.21-1,531.09

Finding the Fourth Proportional to 2,789.97, 3,850.21 and 1,531.09

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Solution

The fourth proportional to 2,789.97, 3,850.21 and 1,531.09 is: 2,112.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.97 : 3,850.21 = 1,531.09 : x
  2. Step 2: Convert to fraction form
    2,789.97/3,850.21 = 1,531.09/x
  3. Step 3: Cross multiply
    2,789.97x = 3,850.21 × 1,531.09
  4. Step 4: Simplify right side
    2,789.97x = 5,895,018.03
  5. Step 5: Solve for x
    x = 5,895,018.03/2,789.97
  6. Step 6: Final answer
    x = 2,112.93

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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.