Home / 1,954.38-2,697.26-1,115.09

Finding the Fourth Proportional to 1,954.38, 2,697.26 and 1,115.09

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Solution

The fourth proportional to 1,954.38, 2,697.26 and 1,115.09 is: 1,538.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954.38 : 2,697.26 = 1,115.09 : x
  2. Step 2: Convert to fraction form
    1,954.38/2,697.26 = 1,115.09/x
  3. Step 3: Cross multiply
    1,954.38x = 2,697.26 × 1,115.09
  4. Step 4: Simplify right side
    1,954.38x = 3,007,668.59
  5. Step 5: Solve for x
    x = 3,007,668.59/1,954.38
  6. Step 6: Final answer
    x = 1,538.94

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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.