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Finding the Fourth Proportional to 8,728.97, 13,093.65 and 2,489.54

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Solution

The fourth proportional to 8,728.97, 13,093.65 and 2,489.54 is: 3,734.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.97 : 13,093.65 = 2,489.54 : x
  2. Step 2: Convert to fraction form
    8,728.97/13,093.65 = 2,489.54/x
  3. Step 3: Cross multiply
    8,728.97x = 13,093.65 × 2,489.54
  4. Step 4: Simplify right side
    8,728.97x = 32,597,099.95
  5. Step 5: Solve for x
    x = 32,597,099.95/8,728.97
  6. Step 6: Final answer
    x = 3,734.36

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1.5x scale

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.