Home / 5,180.38-7,149.32-2,942.95

Finding the Fourth Proportional to 5,180.38, 7,149.32 and 2,942.95

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Solution

The fourth proportional to 5,180.38, 7,149.32 and 2,942.95 is: 4,061.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.38 : 7,149.32 = 2,942.95 : x
  2. Step 2: Convert to fraction form
    5,180.38/7,149.32 = 2,942.95/x
  3. Step 3: Cross multiply
    5,180.38x = 7,149.32 × 2,942.95
  4. Step 4: Simplify right side
    5,180.38x = 21,040,091.29
  5. Step 5: Solve for x
    x = 21,040,091.29/5,180.38
  6. Step 6: Final answer
    x = 4,061.50

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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.