Home / 2,153.78-3,229.03-1,112.39

Finding the Fourth Proportional to 2,153.78, 3,229.03 and 1,112.39

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Solution

The fourth proportional to 2,153.78, 3,229.03 and 1,112.39 is: 1,667.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.78 : 3,229.03 = 1,112.39 : x
  2. Step 2: Convert to fraction form
    2,153.78/3,229.03 = 1,112.39/x
  3. Step 3: Cross multiply
    2,153.78x = 3,229.03 × 1,112.39
  4. Step 4: Simplify right side
    2,153.78x = 3,591,918.97
  5. Step 5: Solve for x
    x = 3,591,918.97/2,153.78
  6. Step 6: Final answer
    x = 1,667.73

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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.