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Finding the Fourth Proportional to 6,398.97, 8,827.72 and 3,745.20

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Solution

The fourth proportional to 6,398.97, 8,827.72 and 3,745.20 is: 5,166.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,398.97 : 8,827.72 = 3,745.20 : x
  2. Step 2: Convert to fraction form
    6,398.97/8,827.72 = 3,745.20/x
  3. Step 3: Cross multiply
    6,398.97x = 8,827.72 × 3,745.20
  4. Step 4: Simplify right side
    6,398.97x = 33,061,600.68
  5. Step 5: Solve for x
    x = 33,061,600.68/6,398.97
  6. Step 6: Final answer
    x = 5,166.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.