Home / 7,091.28-9,786.42-3,947.94

Finding the Fourth Proportional to 7,091.28, 9,786.42 and 3,947.94

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Solution

The fourth proportional to 7,091.28, 9,786.42 and 3,947.94 is: 5,448.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,091.28 : 9,786.42 = 3,947.94 : x
  2. Step 2: Convert to fraction form
    7,091.28/9,786.42 = 3,947.94/x
  3. Step 3: Cross multiply
    7,091.28x = 9,786.42 × 3,947.94
  4. Step 4: Simplify right side
    7,091.28x = 38,636,198.97
  5. Step 5: Solve for x
    x = 38,636,198.97/7,091.28
  6. Step 6: Final answer
    x = 5,448.41

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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.