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Finding the Fourth Proportional to 6,644.22, 9,966.45 and 2,745.90

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Solution

The fourth proportional to 6,644.22, 9,966.45 and 2,745.90 is: 4,118.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,644.22 : 9,966.45 = 2,745.90 : x
  2. Step 2: Convert to fraction form
    6,644.22/9,966.45 = 2,745.90/x
  3. Step 3: Cross multiply
    6,644.22x = 9,966.45 × 2,745.90
  4. Step 4: Simplify right side
    6,644.22x = 27,366,875.06
  5. Step 5: Solve for x
    x = 27,366,875.06/6,644.22
  6. Step 6: Final answer
    x = 4,118.90

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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.