Home / 3,926.81-5,418.86-2,134.22

Finding the Fourth Proportional to 3,926.81, 5,418.86 and 2,134.22

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Solution

The fourth proportional to 3,926.81, 5,418.86 and 2,134.22 is: 2,945.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.81 : 5,418.86 = 2,134.22 : x
  2. Step 2: Convert to fraction form
    3,926.81/5,418.86 = 2,134.22/x
  3. Step 3: Cross multiply
    3,926.81x = 5,418.86 × 2,134.22
  4. Step 4: Simplify right side
    3,926.81x = 11,565,001.62
  5. Step 5: Solve for x
    x = 11,565,001.62/3,926.81
  6. Step 6: Final answer
    x = 2,945.14

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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.