Home / 2,255.11-3,383.45-939.58

Finding the Fourth Proportional to 2,255.11, 3,383.45 and 939.58

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Solution

The fourth proportional to 2,255.11, 3,383.45 and 939.58 is: 1,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.11 : 3,383.45 = 939.58 : x
  2. Step 2: Convert to fraction form
    2,255.11/3,383.45 = 939.58/x
  3. Step 3: Cross multiply
    2,255.11x = 3,383.45 × 939.58
  4. Step 4: Simplify right side
    2,255.11x = 3,179,021.95
  5. Step 5: Solve for x
    x = 3,179,021.95/2,255.11
  6. Step 6: Final answer
    x = 1,409.70

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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.