Home / 8,786.90-13,180.36-2,213.15

Finding the Fourth Proportional to 8,786.90, 13,180.36 and 2,213.15

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Solution

The fourth proportional to 8,786.90, 13,180.36 and 2,213.15 is: 3,319.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.90 : 13,180.36 = 2,213.15 : x
  2. Step 2: Convert to fraction form
    8,786.90/13,180.36 = 2,213.15/x
  3. Step 3: Cross multiply
    8,786.90x = 13,180.36 × 2,213.15
  4. Step 4: Simplify right side
    8,786.90x = 29,170,042.30
  5. Step 5: Solve for x
    x = 29,170,042.30/8,786.90
  6. Step 6: Final answer
    x = 3,319.72

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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.