Home / 7,719.82-11,579.68-1,876.44

Finding the Fourth Proportional to 7,719.82, 11,579.68 and 1,876.44

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Solution

The fourth proportional to 7,719.82, 11,579.68 and 1,876.44 is: 2,814.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.82 : 11,579.68 = 1,876.44 : x
  2. Step 2: Convert to fraction form
    7,719.82/11,579.68 = 1,876.44/x
  3. Step 3: Cross multiply
    7,719.82x = 11,579.68 × 1,876.44
  4. Step 4: Simplify right side
    7,719.82x = 21,728,574.74
  5. Step 5: Solve for x
    x = 21,728,574.74/7,719.82
  6. Step 6: Final answer
    x = 2,814.65

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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.