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Finding the Fourth Proportional to 8,572.58, 12,859.79 and 2,727.82

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Solution

The fourth proportional to 8,572.58, 12,859.79 and 2,727.82 is: 4,092.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572.58 : 12,859.79 = 2,727.82 : x
  2. Step 2: Convert to fraction form
    8,572.58/12,859.79 = 2,727.82/x
  3. Step 3: Cross multiply
    8,572.58x = 12,859.79 × 2,727.82
  4. Step 4: Simplify right side
    8,572.58x = 35,079,146.57
  5. Step 5: Solve for x
    x = 35,079,146.57/8,572.58
  6. Step 6: Final answer
    x = 4,092.02

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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.