Home / 5,078.92-7,012.56-3,961.12

Finding the Fourth Proportional to 5,078.92, 7,012.56 and 3,961.12

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Solution

The fourth proportional to 5,078.92, 7,012.56 and 3,961.12 is: 5,469.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.92 : 7,012.56 = 3,961.12 : x
  2. Step 2: Convert to fraction form
    5,078.92/7,012.56 = 3,961.12/x
  3. Step 3: Cross multiply
    5,078.92x = 7,012.56 × 3,961.12
  4. Step 4: Simplify right side
    5,078.92x = 27,777,591.67
  5. Step 5: Solve for x
    x = 27,777,591.67/5,078.92
  6. Step 6: Final answer
    x = 5,469.19

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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.