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Finding the Fourth Proportional to 3,796.97, 5,239.37 and 2,118.17

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Solution

The fourth proportional to 3,796.97, 5,239.37 and 2,118.17 is: 2,922.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,796.97 : 5,239.37 = 2,118.17 : x
  2. Step 2: Convert to fraction form
    3,796.97/5,239.37 = 2,118.17/x
  3. Step 3: Cross multiply
    3,796.97x = 5,239.37 × 2,118.17
  4. Step 4: Simplify right side
    3,796.97x = 11,097,894.75
  5. Step 5: Solve for x
    x = 11,097,894.75/3,796.97
  6. Step 6: Final answer
    x = 2,922.83

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1.5x scale

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.