Home / 3,878.42-5,351.54-2,305.94

Finding the Fourth Proportional to 3,878.42, 5,351.54 and 2,305.94

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Solution

The fourth proportional to 3,878.42, 5,351.54 and 2,305.94 is: 3,181.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.42 : 5,351.54 = 2,305.94 : x
  2. Step 2: Convert to fraction form
    3,878.42/5,351.54 = 2,305.94/x
  3. Step 3: Cross multiply
    3,878.42x = 5,351.54 × 2,305.94
  4. Step 4: Simplify right side
    3,878.42x = 12,340,330.15
  5. Step 5: Solve for x
    x = 12,340,330.15/3,878.42
  6. Step 6: Final answer
    x = 3,181.79

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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.