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Finding the Fourth Proportional to 1,997, 2,756.02 and 1,169.16

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Solution

The fourth proportional to 1,997, 2,756.02 and 1,169.16 is: 1,613.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997 : 2,756.02 = 1,169.16 : x
  2. Step 2: Convert to fraction form
    1,997/2,756.02 = 1,169.16/x
  3. Step 3: Cross multiply
    1,997x = 2,756.02 × 1,169.16
  4. Step 4: Simplify right side
    1,997x = 3,222,228.34
  5. Step 5: Solve for x
    x = 3,222,228.34/1,997
  6. Step 6: Final answer
    x = 1,613.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.