Home / 1,981.44-2,734.56-1,273.68

Finding the Fourth Proportional to 1,981.44, 2,734.56 and 1,273.68

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Solution

The fourth proportional to 1,981.44, 2,734.56 and 1,273.68 is: 1,757.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.44 : 2,734.56 = 1,273.68 : x
  2. Step 2: Convert to fraction form
    1,981.44/2,734.56 = 1,273.68/x
  3. Step 3: Cross multiply
    1,981.44x = 2,734.56 × 1,273.68
  4. Step 4: Simplify right side
    1,981.44x = 3,482,954.38
  5. Step 5: Solve for x
    x = 3,482,954.38/1,981.44
  6. Step 6: Final answer
    x = 1,757.79

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1.5x scale

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.