Home / 1,780.25-2,671.73-1,163.78

Finding the Fourth Proportional to 1,780.25, 2,671.73 and 1,163.78

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Solution

The fourth proportional to 1,780.25, 2,671.73 and 1,163.78 is: 1,746.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.25 : 2,671.73 = 1,163.78 : x
  2. Step 2: Convert to fraction form
    1,780.25/2,671.73 = 1,163.78/x
  3. Step 3: Cross multiply
    1,780.25x = 2,671.73 × 1,163.78
  4. Step 4: Simplify right side
    1,780.25x = 3,109,286.76
  5. Step 5: Solve for x
    x = 3,109,286.76/1,780.25
  6. Step 6: Final answer
    x = 1,746.55

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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.