Home / 1,912.97-2,640.33-1,167.26

Finding the Fourth Proportional to 1,912.97, 2,640.33 and 1,167.26

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Solution

The fourth proportional to 1,912.97, 2,640.33 and 1,167.26 is: 1,611.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.97 : 2,640.33 = 1,167.26 : x
  2. Step 2: Convert to fraction form
    1,912.97/2,640.33 = 1,167.26/x
  3. Step 3: Cross multiply
    1,912.97x = 2,640.33 × 1,167.26
  4. Step 4: Simplify right side
    1,912.97x = 3,081,938.39
  5. Step 5: Solve for x
    x = 3,081,938.39/1,912.97
  6. Step 6: Final answer
    x = 1,611.07

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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.