Home / 1,961.27-2,940.98-1,139.77

Finding the Fourth Proportional to 1,961.27, 2,940.98 and 1,139.77

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Solution

The fourth proportional to 1,961.27, 2,940.98 and 1,139.77 is: 1,709.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.27 : 2,940.98 = 1,139.77 : x
  2. Step 2: Convert to fraction form
    1,961.27/2,940.98 = 1,139.77/x
  3. Step 3: Cross multiply
    1,961.27x = 2,940.98 × 1,139.77
  4. Step 4: Simplify right side
    1,961.27x = 3,352,040.77
  5. Step 5: Solve for x
    x = 3,352,040.77/1,961.27
  6. Step 6: Final answer
    x = 1,709.12

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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.