Home / 7,923.81-11,881.62-3,479.66

Finding the Fourth Proportional to 7,923.81, 11,881.62 and 3,479.66

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Solution

The fourth proportional to 7,923.81, 11,881.62 and 3,479.66 is: 5,217.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,923.81 : 11,881.62 = 3,479.66 : x
  2. Step 2: Convert to fraction form
    7,923.81/11,881.62 = 3,479.66/x
  3. Step 3: Cross multiply
    7,923.81x = 11,881.62 × 3,479.66
  4. Step 4: Simplify right side
    7,923.81x = 41,343,997.85
  5. Step 5: Solve for x
    x = 41,343,997.85/7,923.81
  6. Step 6: Final answer
    x = 5,217.69

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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.