Home / 8,680.98-11,976.92-5,538.18

Finding the Fourth Proportional to 8,680.98, 11,976.92 and 5,538.18

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Solution

The fourth proportional to 8,680.98, 11,976.92 and 5,538.18 is: 7,640.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.98 : 11,976.92 = 5,538.18 : x
  2. Step 2: Convert to fraction form
    8,680.98/11,976.92 = 5,538.18/x
  3. Step 3: Cross multiply
    8,680.98x = 11,976.92 × 5,538.18
  4. Step 4: Simplify right side
    8,680.98x = 66,330,338.81
  5. Step 5: Solve for x
    x = 66,330,338.81/8,680.98
  6. Step 6: Final answer
    x = 7,640.88

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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.