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Finding the Fourth Proportional to 1,758.49, 2,636.97 and 936.58

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Solution

The fourth proportional to 1,758.49, 2,636.97 and 936.58 is: 1,404.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,758.49 : 2,636.97 = 936.58 : x
  2. Step 2: Convert to fraction form
    1,758.49/2,636.97 = 936.58/x
  3. Step 3: Cross multiply
    1,758.49x = 2,636.97 × 936.58
  4. Step 4: Simplify right side
    1,758.49x = 2,469,733.36
  5. Step 5: Solve for x
    x = 2,469,733.36/1,758.49
  6. Step 6: Final answer
    x = 1,404.46

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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.