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Finding the Fourth Proportional to 8,557.22, 12,836.64 and 3,361.88

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Solution

The fourth proportional to 8,557.22, 12,836.64 and 3,361.88 is: 5,043.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,557.22 : 12,836.64 = 3,361.88 : x
  2. Step 2: Convert to fraction form
    8,557.22/12,836.64 = 3,361.88/x
  3. Step 3: Cross multiply
    8,557.22x = 12,836.64 × 3,361.88
  4. Step 4: Simplify right side
    8,557.22x = 43,155,179.10
  5. Step 5: Solve for x
    x = 43,155,179.10/8,557.22
  6. Step 6: Final answer
    x = 5,043.13

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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.