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Finding the Fourth Proportional to 8,405.97, 12,611.18 and 2,562.63

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Solution

The fourth proportional to 8,405.97, 12,611.18 and 2,562.63 is: 3,844.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,405.97 : 12,611.18 = 2,562.63 : x
  2. Step 2: Convert to fraction form
    8,405.97/12,611.18 = 2,562.63/x
  3. Step 3: Cross multiply
    8,405.97x = 12,611.18 × 2,562.63
  4. Step 4: Simplify right side
    8,405.97x = 32,317,788.20
  5. Step 5: Solve for x
    x = 32,317,788.20/8,405.97
  6. Step 6: Final answer
    x = 3,844.62

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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.