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Finding the Fourth Proportional to 6,641.18, 9,961.80 and 2,745.70

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Solution

The fourth proportional to 6,641.18, 9,961.80 and 2,745.70 is: 4,118.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.18 : 9,961.80 = 2,745.70 : x
  2. Step 2: Convert to fraction form
    6,641.18/9,961.80 = 2,745.70/x
  3. Step 3: Cross multiply
    6,641.18x = 9,961.80 × 2,745.70
  4. Step 4: Simplify right side
    6,641.18x = 27,352,114.26
  5. Step 5: Solve for x
    x = 27,352,114.26/6,641.18
  6. Step 6: Final answer
    x = 4,118.56

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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.