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Finding the Fourth Proportional to 8,659.86, 12,992.80 and 2,737.64

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Solution

The fourth proportional to 8,659.86, 12,992.80 and 2,737.64 is: 4,107.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,659.86 : 12,992.80 = 2,737.64 : x
  2. Step 2: Convert to fraction form
    8,659.86/12,992.80 = 2,737.64/x
  3. Step 3: Cross multiply
    8,659.86x = 12,992.80 × 2,737.64
  4. Step 4: Simplify right side
    8,659.86x = 35,569,608.99
  5. Step 5: Solve for x
    x = 35,569,608.99/8,659.86
  6. Step 6: Final answer
    x = 4,107.41

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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.