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Finding the Fourth Proportional to 2,299.91, 3,448.78 and 838.87

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Solution

The fourth proportional to 2,299.91, 3,448.78 and 838.87 is: 1,257.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,299.91 : 3,448.78 = 838.87 : x
  2. Step 2: Convert to fraction form
    2,299.91/3,448.78 = 838.87/x
  3. Step 3: Cross multiply
    2,299.91x = 3,448.78 × 838.87
  4. Step 4: Simplify right side
    2,299.91x = 2,893,067.36
  5. Step 5: Solve for x
    x = 2,893,067.36/2,299.91
  6. Step 6: Final answer
    x = 1,257.91

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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.