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Finding the Fourth Proportional to 8,636.77, 12,954.30 and 3,089.89

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Solution

The fourth proportional to 8,636.77, 12,954.30 and 3,089.89 is: 4,634.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.77 : 12,954.30 = 3,089.89 : x
  2. Step 2: Convert to fraction form
    8,636.77/12,954.30 = 3,089.89/x
  3. Step 3: Cross multiply
    8,636.77x = 12,954.30 × 3,089.89
  4. Step 4: Simplify right side
    8,636.77x = 40,027,362.03
  5. Step 5: Solve for x
    x = 40,027,362.03/8,636.77
  6. Step 6: Final answer
    x = 4,634.53

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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.