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Finding the Fourth Proportional to 8,652.66, 12,984.51 and 3,105.89

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Solution

The fourth proportional to 8,652.66, 12,984.51 and 3,105.89 is: 4,660.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,652.66 : 12,984.51 = 3,105.89 : x
  2. Step 2: Convert to fraction form
    8,652.66/12,984.51 = 3,105.89/x
  3. Step 3: Cross multiply
    8,652.66x = 12,984.51 × 3,105.89
  4. Step 4: Simplify right side
    8,652.66x = 40,328,394.84
  5. Step 5: Solve for x
    x = 40,328,394.84/8,652.66
  6. Step 6: Final answer
    x = 4,660.81

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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.