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Finding the Fourth Proportional to 8,664.08, 12,996.11 and 2,820.68

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Solution

The fourth proportional to 8,664.08, 12,996.11 and 2,820.68 is: 4,231.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.08 : 12,996.11 = 2,820.68 : x
  2. Step 2: Convert to fraction form
    8,664.08/12,996.11 = 2,820.68/x
  3. Step 3: Cross multiply
    8,664.08x = 12,996.11 × 2,820.68
  4. Step 4: Simplify right side
    8,664.08x = 36,657,788.47
  5. Step 5: Solve for x
    x = 36,657,788.47/8,664.08
  6. Step 6: Final answer
    x = 4,231.01

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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.