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Finding the Fourth Proportional to 1,999.49, 2,996.93 and 1,122.39

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Solution

The fourth proportional to 1,999.49, 2,996.93 and 1,122.39 is: 1,682.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.49 : 2,996.93 = 1,122.39 : x
  2. Step 2: Convert to fraction form
    1,999.49/2,996.93 = 1,122.39/x
  3. Step 3: Cross multiply
    1,999.49x = 2,996.93 × 1,122.39
  4. Step 4: Simplify right side
    1,999.49x = 3,363,718.65
  5. Step 5: Solve for x
    x = 3,363,718.65/1,999.49
  6. Step 6: Final answer
    x = 1,682.29

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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.