Home / 8,964.81-13,449.42-3,121.47

Finding the Fourth Proportional to 8,964.81, 13,449.42 and 3,121.47

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Solution

The fourth proportional to 8,964.81, 13,449.42 and 3,121.47 is: 4,682.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,964.81 : 13,449.42 = 3,121.47 : x
  2. Step 2: Convert to fraction form
    8,964.81/13,449.42 = 3,121.47/x
  3. Step 3: Cross multiply
    8,964.81x = 13,449.42 × 3,121.47
  4. Step 4: Simplify right side
    8,964.81x = 41,981,961.05
  5. Step 5: Solve for x
    x = 41,981,961.05/8,964.81
  6. Step 6: Final answer
    x = 4,682.97

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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.