Home / 1,961.72-2,944.26-1,138.85

Finding the Fourth Proportional to 1,961.72, 2,944.26 and 1,138.85

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Solution

The fourth proportional to 1,961.72, 2,944.26 and 1,138.85 is: 1,709.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.72 : 2,944.26 = 1,138.85 : x
  2. Step 2: Convert to fraction form
    1,961.72/2,944.26 = 1,138.85/x
  3. Step 3: Cross multiply
    1,961.72x = 2,944.26 × 1,138.85
  4. Step 4: Simplify right side
    1,961.72x = 3,353,055.78
  5. Step 5: Solve for x
    x = 3,353,055.78/1,961.72
  6. Step 6: Final answer
    x = 1,709.25

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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.