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Finding the Fourth Proportional to 7,763.01, 11,640.97 and 2,215

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Solution

The fourth proportional to 7,763.01, 11,640.97 and 2,215 is: 3,321.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,763.01 : 11,640.97 = 2,215 : x
  2. Step 2: Convert to fraction form
    7,763.01/11,640.97 = 2,215/x
  3. Step 3: Cross multiply
    7,763.01x = 11,640.97 × 2,215
  4. Step 4: Simplify right side
    7,763.01x = 25,784,748.55
  5. Step 5: Solve for x
    x = 25,784,748.55/7,763.01
  6. Step 6: Final answer
    x = 3,321.49

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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.