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Finding the Fourth Proportional to 8,782.76, 13,174.05 and 2,208.80

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Solution

The fourth proportional to 8,782.76, 13,174.05 and 2,208.80 is: 3,313.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,782.76 : 13,174.05 = 2,208.80 : x
  2. Step 2: Convert to fraction form
    8,782.76/13,174.05 = 2,208.80/x
  3. Step 3: Cross multiply
    8,782.76x = 13,174.05 × 2,208.80
  4. Step 4: Simplify right side
    8,782.76x = 29,098,841.64
  5. Step 5: Solve for x
    x = 29,098,841.64/8,782.76
  6. Step 6: Final answer
    x = 3,313.18

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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.