Home / 1,980.38-2,732.97-1,096.22

Finding the Fourth Proportional to 1,980.38, 2,732.97 and 1,096.22

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Solution

The fourth proportional to 1,980.38, 2,732.97 and 1,096.22 is: 1,512.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.38 : 2,732.97 = 1,096.22 : x
  2. Step 2: Convert to fraction form
    1,980.38/2,732.97 = 1,096.22/x
  3. Step 3: Cross multiply
    1,980.38x = 2,732.97 × 1,096.22
  4. Step 4: Simplify right side
    1,980.38x = 2,995,936.37
  5. Step 5: Solve for x
    x = 2,995,936.37/1,980.38
  6. Step 6: Final answer
    x = 1,512.81

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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.