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Finding the Fourth Proportional to 8,407.80, 12,606.66 and 3,474.54

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Solution

The fourth proportional to 8,407.80, 12,606.66 and 3,474.54 is: 5,209.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,407.80 : 12,606.66 = 3,474.54 : x
  2. Step 2: Convert to fraction form
    8,407.80/12,606.66 = 3,474.54/x
  3. Step 3: Cross multiply
    8,407.80x = 12,606.66 × 3,474.54
  4. Step 4: Simplify right side
    8,407.80x = 43,802,344.44
  5. Step 5: Solve for x
    x = 43,802,344.44/8,407.80
  6. Step 6: Final answer
    x = 5,209.73

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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.