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Finding the Fourth Proportional to 1,996.91, 2,995.38 and 764.39

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Solution

The fourth proportional to 1,996.91, 2,995.38 and 764.39 is: 1,146.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996.91 : 2,995.38 = 764.39 : x
  2. Step 2: Convert to fraction form
    1,996.91/2,995.38 = 764.39/x
  3. Step 3: Cross multiply
    1,996.91x = 2,995.38 × 764.39
  4. Step 4: Simplify right side
    1,996.91x = 2,289,623.54
  5. Step 5: Solve for x
    x = 2,289,623.54/1,996.91
  6. Step 6: Final answer
    x = 1,146.59

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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.