Home / 8,736.80-13,105.20-3,188.30

Finding the Fourth Proportional to 8,736.80, 13,105.20 and 3,188.30

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Solution

The fourth proportional to 8,736.80, 13,105.20 and 3,188.30 is: 4,782.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,736.80 : 13,105.20 = 3,188.30 : x
  2. Step 2: Convert to fraction form
    8,736.80/13,105.20 = 3,188.30/x
  3. Step 3: Cross multiply
    8,736.80x = 13,105.20 × 3,188.30
  4. Step 4: Simplify right side
    8,736.80x = 41,783,309.16
  5. Step 5: Solve for x
    x = 41,783,309.16/8,736.80
  6. Step 6: Final answer
    x = 4,782.45

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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.