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Finding the Fourth Proportional to 2,137.32, 3,204.54 and 838.44

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Solution

The fourth proportional to 2,137.32, 3,204.54 and 838.44 is: 1,257.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.32 : 3,204.54 = 838.44 : x
  2. Step 2: Convert to fraction form
    2,137.32/3,204.54 = 838.44/x
  3. Step 3: Cross multiply
    2,137.32x = 3,204.54 × 838.44
  4. Step 4: Simplify right side
    2,137.32x = 2,686,814.52
  5. Step 5: Solve for x
    x = 2,686,814.52/2,137.32
  6. Step 6: Final answer
    x = 1,257.10

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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.