Home / 3,878.11-5,351.91-2,199.58

Finding the Fourth Proportional to 3,878.11, 5,351.91 and 2,199.58

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Solution

The fourth proportional to 3,878.11, 5,351.91 and 2,199.58 is: 3,035.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.11 : 5,351.91 = 2,199.58 : x
  2. Step 2: Convert to fraction form
    3,878.11/5,351.91 = 2,199.58/x
  3. Step 3: Cross multiply
    3,878.11x = 5,351.91 × 2,199.58
  4. Step 4: Simplify right side
    3,878.11x = 11,771,943.20
  5. Step 5: Solve for x
    x = 11,771,943.20/3,878.11
  6. Step 6: Final answer
    x = 3,035.49

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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.