Home / 1,961.17-2,706.55-1,296.87

Finding the Fourth Proportional to 1,961.17, 2,706.55 and 1,296.87

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Solution

The fourth proportional to 1,961.17, 2,706.55 and 1,296.87 is: 1,789.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.17 : 2,706.55 = 1,296.87 : x
  2. Step 2: Convert to fraction form
    1,961.17/2,706.55 = 1,296.87/x
  3. Step 3: Cross multiply
    1,961.17x = 2,706.55 × 1,296.87
  4. Step 4: Simplify right side
    1,961.17x = 3,510,023.48
  5. Step 5: Solve for x
    x = 3,510,023.48/1,961.17
  6. Step 6: Final answer
    x = 1,789.76

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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.