Home / 1,961.10-2,706.46-1,296.80

Finding the Fourth Proportional to 1,961.10, 2,706.46 and 1,296.80

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Solution

The fourth proportional to 1,961.10, 2,706.46 and 1,296.80 is: 1,789.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.10 : 2,706.46 = 1,296.80 : x
  2. Step 2: Convert to fraction form
    1,961.10/2,706.46 = 1,296.80/x
  3. Step 3: Cross multiply
    1,961.10x = 2,706.46 × 1,296.80
  4. Step 4: Simplify right side
    1,961.10x = 3,509,737.33
  5. Step 5: Solve for x
    x = 3,509,737.33/1,961.10
  6. Step 6: Final answer
    x = 1,789.68

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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.