Home / 3,796.61-5,238.09-2,117.75

Finding the Fourth Proportional to 3,796.61, 5,238.09 and 2,117.75

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Solution

The fourth proportional to 3,796.61, 5,238.09 and 2,117.75 is: 2,921.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,796.61 : 5,238.09 = 2,117.75 : x
  2. Step 2: Convert to fraction form
    3,796.61/5,238.09 = 2,117.75/x
  3. Step 3: Cross multiply
    3,796.61x = 5,238.09 × 2,117.75
  4. Step 4: Simplify right side
    3,796.61x = 11,092,944.86
  5. Step 5: Solve for x
    x = 11,092,944.86/3,796.61
  6. Step 6: Final answer
    x = 2,921.80

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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.