Home / 3,917.78-5,878.83-2,187.38

Finding the Fourth Proportional to 3,917.78, 5,878.83 and 2,187.38

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Solution

The fourth proportional to 3,917.78, 5,878.83 and 2,187.38 is: 3,282.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.78 : 5,878.83 = 2,187.38 : x
  2. Step 2: Convert to fraction form
    3,917.78/5,878.83 = 2,187.38/x
  3. Step 3: Cross multiply
    3,917.78x = 5,878.83 × 2,187.38
  4. Step 4: Simplify right side
    3,917.78x = 12,859,235.17
  5. Step 5: Solve for x
    x = 12,859,235.17/3,917.78
  6. Step 6: Final answer
    x = 3,282.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.