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Finding the Fourth Proportional to 8,561.73, 12,842.82 and 3,630.51

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Solution

The fourth proportional to 8,561.73, 12,842.82 and 3,630.51 is: 5,445.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,561.73 : 12,842.82 = 3,630.51 : x
  2. Step 2: Convert to fraction form
    8,561.73/12,842.82 = 3,630.51/x
  3. Step 3: Cross multiply
    8,561.73x = 12,842.82 × 3,630.51
  4. Step 4: Simplify right side
    8,561.73x = 46,625,986.44
  5. Step 5: Solve for x
    x = 46,625,986.44/8,561.73
  6. Step 6: Final answer
    x = 5,445.86

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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.