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Finding the Fourth Proportional to 7,279.91, 10,916.42 and 3,330.01

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Solution

The fourth proportional to 7,279.91, 10,916.42 and 3,330.01 is: 4,993.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.91 : 10,916.42 = 3,330.01 : x
  2. Step 2: Convert to fraction form
    7,279.91/10,916.42 = 3,330.01/x
  3. Step 3: Cross multiply
    7,279.91x = 10,916.42 × 3,330.01
  4. Step 4: Simplify right side
    7,279.91x = 36,351,743.82
  5. Step 5: Solve for x
    x = 36,351,743.82/7,279.91
  6. Step 6: Final answer
    x = 4,993.44

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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.