Home / 1,980.81-2,733.89-1,273.55

Finding the Fourth Proportional to 1,980.81, 2,733.89 and 1,273.55

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Solution

The fourth proportional to 1,980.81, 2,733.89 and 1,273.55 is: 1,757.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.81 : 2,733.89 = 1,273.55 : x
  2. Step 2: Convert to fraction form
    1,980.81/2,733.89 = 1,273.55/x
  3. Step 3: Cross multiply
    1,980.81x = 2,733.89 × 1,273.55
  4. Step 4: Simplify right side
    1,980.81x = 3,481,725.57
  5. Step 5: Solve for x
    x = 3,481,725.57/1,980.81
  6. Step 6: Final answer
    x = 1,757.73

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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.