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Finding the Fourth Proportional to 1,996.26, 2,994.54 and 1,118.76

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Solution

The fourth proportional to 1,996.26, 2,994.54 and 1,118.76 is: 1,678.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996.26 : 2,994.54 = 1,118.76 : x
  2. Step 2: Convert to fraction form
    1,996.26/2,994.54 = 1,118.76/x
  3. Step 3: Cross multiply
    1,996.26x = 2,994.54 × 1,118.76
  4. Step 4: Simplify right side
    1,996.26x = 3,350,171.57
  5. Step 5: Solve for x
    x = 3,350,171.57/1,996.26
  6. Step 6: Final answer
    x = 1,678.22

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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.