Home / 7,976.97-11,961.81-2,781.63

Finding the Fourth Proportional to 7,976.97, 11,961.81 and 2,781.63

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Solution

The fourth proportional to 7,976.97, 11,961.81 and 2,781.63 is: 4,171.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,976.97 : 11,961.81 = 2,781.63 : x
  2. Step 2: Convert to fraction form
    7,976.97/11,961.81 = 2,781.63/x
  3. Step 3: Cross multiply
    7,976.97x = 11,961.81 × 2,781.63
  4. Step 4: Simplify right side
    7,976.97x = 33,273,329.55
  5. Step 5: Solve for x
    x = 33,273,329.55/7,976.97
  6. Step 6: Final answer
    x = 4,171.17

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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.