Home / 1,942.38-2,913.57-1,288.44

Finding the Fourth Proportional to 1,942.38, 2,913.57 and 1,288.44

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Solution

The fourth proportional to 1,942.38, 2,913.57 and 1,288.44 is: 1,932.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.38 : 2,913.57 = 1,288.44 : x
  2. Step 2: Convert to fraction form
    1,942.38/2,913.57 = 1,288.44/x
  3. Step 3: Cross multiply
    1,942.38x = 2,913.57 × 1,288.44
  4. Step 4: Simplify right side
    1,942.38x = 3,753,960.13
  5. Step 5: Solve for x
    x = 3,753,960.13/1,942.38
  6. Step 6: Final answer
    x = 1,932.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.