Home / 8,269.14-11,400.80-5,279.96

Finding the Fourth Proportional to 8,269.14, 11,400.80 and 5,279.96

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Solution

The fourth proportional to 8,269.14, 11,400.80 and 5,279.96 is: 7,279.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,269.14 : 11,400.80 = 5,279.96 : x
  2. Step 2: Convert to fraction form
    8,269.14/11,400.80 = 5,279.96/x
  3. Step 3: Cross multiply
    8,269.14x = 11,400.80 × 5,279.96
  4. Step 4: Simplify right side
    8,269.14x = 60,195,767.97
  5. Step 5: Solve for x
    x = 60,195,767.97/8,269.14
  6. Step 6: Final answer
    x = 7,279.57

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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.