Home / 6,665.20-9,198.05-3,680.98

Finding the Fourth Proportional to 6,665.20, 9,198.05 and 3,680.98

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Solution

The fourth proportional to 6,665.20, 9,198.05 and 3,680.98 is: 5,079.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,665.20 : 9,198.05 = 3,680.98 : x
  2. Step 2: Convert to fraction form
    6,665.20/9,198.05 = 3,680.98/x
  3. Step 3: Cross multiply
    6,665.20x = 9,198.05 × 3,680.98
  4. Step 4: Simplify right side
    6,665.20x = 33,857,838.09
  5. Step 5: Solve for x
    x = 33,857,838.09/6,665.20
  6. Step 6: Final answer
    x = 5,079.79

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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.