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Finding the Fourth Proportional to 8,651.83, 12,980.10 and 2,808.44

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Solution

The fourth proportional to 8,651.83, 12,980.10 and 2,808.44 is: 4,213.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651.83 : 12,980.10 = 2,808.44 : x
  2. Step 2: Convert to fraction form
    8,651.83/12,980.10 = 2,808.44/x
  3. Step 3: Cross multiply
    8,651.83x = 12,980.10 × 2,808.44
  4. Step 4: Simplify right side
    8,651.83x = 36,453,832.04
  5. Step 5: Solve for x
    x = 36,453,832.04/8,651.83
  6. Step 6: Final answer
    x = 4,213.42

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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.