Home / 3,878.22-5,351.93-2,109.82

Finding the Fourth Proportional to 3,878.22, 5,351.93 and 2,109.82

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Solution

The fourth proportional to 3,878.22, 5,351.93 and 2,109.82 is: 2,911.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.22 : 5,351.93 = 2,109.82 : x
  2. Step 2: Convert to fraction form
    3,878.22/5,351.93 = 2,109.82/x
  3. Step 3: Cross multiply
    3,878.22x = 5,351.93 × 2,109.82
  4. Step 4: Simplify right side
    3,878.22x = 11,291,592.94
  5. Step 5: Solve for x
    x = 11,291,592.94/3,878.22
  6. Step 6: Final answer
    x = 2,911.54

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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.