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Finding the Fourth Proportional to 1,996.07, 2,994.10 and 763.43

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Solution

The fourth proportional to 1,996.07, 2,994.10 and 763.43 is: 1,145.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996.07 : 2,994.10 = 763.43 : x
  2. Step 2: Convert to fraction form
    1,996.07/2,994.10 = 763.43/x
  3. Step 3: Cross multiply
    1,996.07x = 2,994.10 × 763.43
  4. Step 4: Simplify right side
    1,996.07x = 2,285,768.88
  5. Step 5: Solve for x
    x = 2,285,768.88/1,996.07
  6. Step 6: Final answer
    x = 1,145.14

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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.