Home / 7,651.78-11,480.73-2,721.76

Finding the Fourth Proportional to 7,651.78, 11,480.73 and 2,721.76

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Solution

The fourth proportional to 7,651.78, 11,480.73 and 2,721.76 is: 4,083.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,651.78 : 11,480.73 = 2,721.76 : x
  2. Step 2: Convert to fraction form
    7,651.78/11,480.73 = 2,721.76/x
  3. Step 3: Cross multiply
    7,651.78x = 11,480.73 × 2,721.76
  4. Step 4: Simplify right side
    7,651.78x = 31,247,791.68
  5. Step 5: Solve for x
    x = 31,247,791.68/7,651.78
  6. Step 6: Final answer
    x = 4,083.73

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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.