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Finding the Fourth Proportional to 8,810.75, 13,220.43 and 3,879.77

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Solution

The fourth proportional to 8,810.75, 13,220.43 and 3,879.77 is: 5,821.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,810.75 : 13,220.43 = 3,879.77 : x
  2. Step 2: Convert to fraction form
    8,810.75/13,220.43 = 3,879.77/x
  3. Step 3: Cross multiply
    8,810.75x = 13,220.43 × 3,879.77
  4. Step 4: Simplify right side
    8,810.75x = 51,292,208.30
  5. Step 5: Solve for x
    x = 51,292,208.30/8,810.75
  6. Step 6: Final answer
    x = 5,821.55

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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.