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Finding the Fourth Proportional to 8,538.68, 12,809.10 and 3,343.88

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Solution

The fourth proportional to 8,538.68, 12,809.10 and 3,343.88 is: 5,016.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,538.68 : 12,809.10 = 3,343.88 : x
  2. Step 2: Convert to fraction form
    8,538.68/12,809.10 = 3,343.88/x
  3. Step 3: Cross multiply
    8,538.68x = 12,809.10 × 3,343.88
  4. Step 4: Simplify right side
    8,538.68x = 42,832,093.31
  5. Step 5: Solve for x
    x = 42,832,093.31/8,538.68
  6. Step 6: Final answer
    x = 5,016.24

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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.