Home / 8,105.50-11,187.66-5,279.92

Finding the Fourth Proportional to 8,105.50, 11,187.66 and 5,279.92

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Solution

The fourth proportional to 8,105.50, 11,187.66 and 5,279.92 is: 7,287.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.50 : 11,187.66 = 5,279.92 : x
  2. Step 2: Convert to fraction form
    8,105.50/11,187.66 = 5,279.92/x
  3. Step 3: Cross multiply
    8,105.50x = 11,187.66 × 5,279.92
  4. Step 4: Simplify right side
    8,105.50x = 59,069,949.79
  5. Step 5: Solve for x
    x = 59,069,949.79/8,105.50
  6. Step 6: Final answer
    x = 7,287.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.