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Finding the Fourth Proportional to 7,650.21, 11,472.08 and 2,721.09

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Solution

The fourth proportional to 7,650.21, 11,472.08 and 2,721.09 is: 4,080.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,650.21 : 11,472.08 = 2,721.09 : x
  2. Step 2: Convert to fraction form
    7,650.21/11,472.08 = 2,721.09/x
  3. Step 3: Cross multiply
    7,650.21x = 11,472.08 × 2,721.09
  4. Step 4: Simplify right side
    7,650.21x = 31,216,548.56
  5. Step 5: Solve for x
    x = 31,216,548.56/7,650.21
  6. Step 6: Final answer
    x = 4,080.48

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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.