Home / 2,780.73-3,836.97-1,661.51

Finding the Fourth Proportional to 2,780.73, 3,836.97 and 1,661.51

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Solution

The fourth proportional to 2,780.73, 3,836.97 and 1,661.51 is: 2,292.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.73 : 3,836.97 = 1,661.51 : x
  2. Step 2: Convert to fraction form
    2,780.73/3,836.97 = 1,661.51/x
  3. Step 3: Cross multiply
    2,780.73x = 3,836.97 × 1,661.51
  4. Step 4: Simplify right side
    2,780.73x = 6,375,173.62
  5. Step 5: Solve for x
    x = 6,375,173.62/2,780.73
  6. Step 6: Final answer
    x = 2,292.63

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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.