Home / 7,279.36-10,919.09-3,115.86

Finding the Fourth Proportional to 7,279.36, 10,919.09 and 3,115.86

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Solution

The fourth proportional to 7,279.36, 10,919.09 and 3,115.86 is: 4,673.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.36 : 10,919.09 = 3,115.86 : x
  2. Step 2: Convert to fraction form
    7,279.36/10,919.09 = 3,115.86/x
  3. Step 3: Cross multiply
    7,279.36x = 10,919.09 × 3,115.86
  4. Step 4: Simplify right side
    7,279.36x = 34,022,285.59
  5. Step 5: Solve for x
    x = 34,022,285.59/7,279.36
  6. Step 6: Final answer
    x = 4,673.80

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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.