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Finding the Fourth Proportional to 1,635.50, 2,257 and 936.92

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Solution

The fourth proportional to 1,635.50, 2,257 and 936.92 is: 1,292.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635.50 : 2,257 = 936.92 : x
  2. Step 2: Convert to fraction form
    1,635.50/2,257 = 936.92/x
  3. Step 3: Cross multiply
    1,635.50x = 2,257 × 936.92
  4. Step 4: Simplify right side
    1,635.50x = 2,114,628.44
  5. Step 5: Solve for x
    x = 2,114,628.44/1,635.50
  6. Step 6: Final answer
    x = 1,292.96

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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.