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Finding the Fourth Proportional to 8,879.81, 13,310.46 and 3,612.56

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Solution

The fourth proportional to 8,879.81, 13,310.46 and 3,612.56 is: 5,415.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.81 : 13,310.46 = 3,612.56 : x
  2. Step 2: Convert to fraction form
    8,879.81/13,310.46 = 3,612.56/x
  3. Step 3: Cross multiply
    8,879.81x = 13,310.46 × 3,612.56
  4. Step 4: Simplify right side
    8,879.81x = 48,084,768.83
  5. Step 5: Solve for x
    x = 48,084,768.83/8,879.81
  6. Step 6: Final answer
    x = 5,415.07

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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.