Home / 2,117.97-3,177.68-1,091.25

Finding the Fourth Proportional to 2,117.97, 3,177.68 and 1,091.25

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Solution

The fourth proportional to 2,117.97, 3,177.68 and 1,091.25 is: 1,637.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.97 : 3,177.68 = 1,091.25 : x
  2. Step 2: Convert to fraction form
    2,117.97/3,177.68 = 1,091.25/x
  3. Step 3: Cross multiply
    2,117.97x = 3,177.68 × 1,091.25
  4. Step 4: Simplify right side
    2,117.97x = 3,467,637.84
  5. Step 5: Solve for x
    x = 3,467,637.84/2,117.97
  6. Step 6: Final answer
    x = 1,637.25

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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.