Home / 3,878.75-5,352.62-2,110.32

Finding the Fourth Proportional to 3,878.75, 5,352.62 and 2,110.32

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Solution

The fourth proportional to 3,878.75, 5,352.62 and 2,110.32 is: 2,912.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.75 : 5,352.62 = 2,110.32 : x
  2. Step 2: Convert to fraction form
    3,878.75/5,352.62 = 2,110.32/x
  3. Step 3: Cross multiply
    3,878.75x = 5,352.62 × 2,110.32
  4. Step 4: Simplify right side
    3,878.75x = 11,295,730.49
  5. Step 5: Solve for x
    x = 11,295,730.49/3,878.75
  6. Step 6: Final answer
    x = 2,912.21

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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.