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Finding the Fourth Proportional to 9,235.75, 12,745.34 and 8,493.79

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Solution

The fourth proportional to 9,235.75, 12,745.34 and 8,493.79 is: 11,721.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,235.75 : 12,745.34 = 8,493.79 : x
  2. Step 2: Convert to fraction form
    9,235.75/12,745.34 = 8,493.79/x
  3. Step 3: Cross multiply
    9,235.75x = 12,745.34 × 8,493.79
  4. Step 4: Simplify right side
    9,235.75x = 108,256,241.44
  5. Step 5: Solve for x
    x = 108,256,241.44/9,235.75
  6. Step 6: Final answer
    x = 11,721.43

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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.