Home / 8,738.68-13,103.70-3,191.80

Finding the Fourth Proportional to 8,738.68, 13,103.70 and 3,191.80

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Solution

The fourth proportional to 8,738.68, 13,103.70 and 3,191.80 is: 4,786.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,738.68 : 13,103.70 = 3,191.80 : x
  2. Step 2: Convert to fraction form
    8,738.68/13,103.70 = 3,191.80/x
  3. Step 3: Cross multiply
    8,738.68x = 13,103.70 × 3,191.80
  4. Step 4: Simplify right side
    8,738.68x = 41,824,389.66
  5. Step 5: Solve for x
    x = 41,824,389.66/8,738.68
  6. Step 6: Final answer
    x = 4,786.12

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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.