Home / 2,878.82-3,972.21-2,083.38

Finding the Fourth Proportional to 2,878.82, 3,972.21 and 2,083.38

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Solution

The fourth proportional to 2,878.82, 3,972.21 and 2,083.38 is: 2,874.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.82 : 3,972.21 = 2,083.38 : x
  2. Step 2: Convert to fraction form
    2,878.82/3,972.21 = 2,083.38/x
  3. Step 3: Cross multiply
    2,878.82x = 3,972.21 × 2,083.38
  4. Step 4: Simplify right side
    2,878.82x = 8,275,622.87
  5. Step 5: Solve for x
    x = 8,275,622.87/2,878.82
  6. Step 6: Final answer
    x = 2,874.66

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1.5x scale

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.