Home / 7,981.22-11,976.78-3,051.36

Finding the Fourth Proportional to 7,981.22, 11,976.78 and 3,051.36

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Solution

The fourth proportional to 7,981.22, 11,976.78 and 3,051.36 is: 4,578.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.22 : 11,976.78 = 3,051.36 : x
  2. Step 2: Convert to fraction form
    7,981.22/11,976.78 = 3,051.36/x
  3. Step 3: Cross multiply
    7,981.22x = 11,976.78 × 3,051.36
  4. Step 4: Simplify right side
    7,981.22x = 36,545,467.42
  5. Step 5: Solve for x
    x = 36,545,467.42/7,981.22
  6. Step 6: Final answer
    x = 4,578.93

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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.