Home / 3,878.82-5,352.77-2,110.43

Finding the Fourth Proportional to 3,878.82, 5,352.77 and 2,110.43

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Solution

The fourth proportional to 3,878.82, 5,352.77 and 2,110.43 is: 2,912.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.82 : 5,352.77 = 2,110.43 : x
  2. Step 2: Convert to fraction form
    3,878.82/5,352.77 = 2,110.43/x
  3. Step 3: Cross multiply
    3,878.82x = 5,352.77 × 2,110.43
  4. Step 4: Simplify right side
    3,878.82x = 11,296,665.05
  5. Step 5: Solve for x
    x = 11,296,665.05/3,878.82
  6. Step 6: Final answer
    x = 2,912.40

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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.