Home / 8,678.91-11,976.99-5,141.43

Finding the Fourth Proportional to 8,678.91, 11,976.99 and 5,141.43

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Solution

The fourth proportional to 8,678.91, 11,976.99 and 5,141.43 is: 7,095.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.91 : 11,976.99 = 5,141.43 : x
  2. Step 2: Convert to fraction form
    8,678.91/11,976.99 = 5,141.43/x
  3. Step 3: Cross multiply
    8,678.91x = 11,976.99 × 5,141.43
  4. Step 4: Simplify right side
    8,678.91x = 61,578,855.70
  5. Step 5: Solve for x
    x = 61,578,855.70/8,678.91
  6. Step 6: Final answer
    x = 7,095.23

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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.