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Finding the Fourth Proportional to 2,659.98, 3,989.97 and 1,197.42

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Solution

The fourth proportional to 2,659.98, 3,989.97 and 1,197.42 is: 1,796.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,659.98 : 3,989.97 = 1,197.42 : x
  2. Step 2: Convert to fraction form
    2,659.98/3,989.97 = 1,197.42/x
  3. Step 3: Cross multiply
    2,659.98x = 3,989.97 × 1,197.42
  4. Step 4: Simplify right side
    2,659.98x = 4,777,669.88
  5. Step 5: Solve for x
    x = 4,777,669.88/2,659.98
  6. Step 6: Final answer
    x = 1,796.13

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Similar ratio
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1.5x scale

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.