Home / 7,091.64-9,786.54-3,947.88

Finding the Fourth Proportional to 7,091.64, 9,786.54 and 3,947.88

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Solution

The fourth proportional to 7,091.64, 9,786.54 and 3,947.88 is: 5,448.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,091.64 : 9,786.54 = 3,947.88 : x
  2. Step 2: Convert to fraction form
    7,091.64/9,786.54 = 3,947.88/x
  3. Step 3: Cross multiply
    7,091.64x = 9,786.54 × 3,947.88
  4. Step 4: Simplify right side
    7,091.64x = 38,636,085.54
  5. Step 5: Solve for x
    x = 38,636,085.54/7,091.64
  6. Step 6: Final answer
    x = 5,448.12

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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.