Home / 1,976.76-2,725.90-1,190.66

Finding the Fourth Proportional to 1,976.76, 2,725.90 and 1,190.66

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Solution

The fourth proportional to 1,976.76, 2,725.90 and 1,190.66 is: 1,641.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976.76 : 2,725.90 = 1,190.66 : x
  2. Step 2: Convert to fraction form
    1,976.76/2,725.90 = 1,190.66/x
  3. Step 3: Cross multiply
    1,976.76x = 2,725.90 × 1,190.66
  4. Step 4: Simplify right side
    1,976.76x = 3,245,620.09
  5. Step 5: Solve for x
    x = 3,245,620.09/1,976.76
  6. Step 6: Final answer
    x = 1,641.89

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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.