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Finding the Fourth Proportional to 7,279.82, 10,918.90 and 3,767.87

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Solution

The fourth proportional to 7,279.82, 10,918.90 and 3,767.87 is: 5,651.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.82 : 10,918.90 = 3,767.87 : x
  2. Step 2: Convert to fraction form
    7,279.82/10,918.90 = 3,767.87/x
  3. Step 3: Cross multiply
    7,279.82x = 10,918.90 × 3,767.87
  4. Step 4: Simplify right side
    7,279.82x = 41,140,966.33
  5. Step 5: Solve for x
    x = 41,140,966.33/7,279.82
  6. Step 6: Final answer
    x = 5,651.37

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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.