Home / 3,878.67-5,818.92-2,791.25

Finding the Fourth Proportional to 3,878.67, 5,818.92 and 2,791.25

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Solution

The fourth proportional to 3,878.67, 5,818.92 and 2,791.25 is: 4,187.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.67 : 5,818.92 = 2,791.25 : x
  2. Step 2: Convert to fraction form
    3,878.67/5,818.92 = 2,791.25/x
  3. Step 3: Cross multiply
    3,878.67x = 5,818.92 × 2,791.25
  4. Step 4: Simplify right side
    3,878.67x = 16,242,060.45
  5. Step 5: Solve for x
    x = 16,242,060.45/3,878.67
  6. Step 6: Final answer
    x = 4,187.53

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1.5x scale

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.