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Finding the Fourth Proportional to 8,652.89, 12,981.15 and 2,809.04

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Solution

The fourth proportional to 8,652.89, 12,981.15 and 2,809.04 is: 4,214.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,652.89 : 12,981.15 = 2,809.04 : x
  2. Step 2: Convert to fraction form
    8,652.89/12,981.15 = 2,809.04/x
  3. Step 3: Cross multiply
    8,652.89x = 12,981.15 × 2,809.04
  4. Step 4: Simplify right side
    8,652.89x = 36,464,504.69
  5. Step 5: Solve for x
    x = 36,464,504.69/8,652.89
  6. Step 6: Final answer
    x = 4,214.14

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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.