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Finding the Fourth Proportional to 3,653, 5,041.22 and 1,997

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Solution

The fourth proportional to 3,653, 5,041.22 and 1,997 is: 2,755.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653 : 5,041.22 = 1,997 : x
  2. Step 2: Convert to fraction form
    3,653/5,041.22 = 1,997/x
  3. Step 3: Cross multiply
    3,653x = 5,041.22 × 1,997
  4. Step 4: Simplify right side
    3,653x = 10,067,316.34
  5. Step 5: Solve for x
    x = 10,067,316.34/3,653
  6. Step 6: Final answer
    x = 2,755.90

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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.