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Finding the Fourth Proportional to 8,579.39, 11,836.03 and 5,221.65

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Solution

The fourth proportional to 8,579.39, 11,836.03 and 5,221.65 is: 7,203.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.39 : 11,836.03 = 5,221.65 : x
  2. Step 2: Convert to fraction form
    8,579.39/11,836.03 = 5,221.65/x
  3. Step 3: Cross multiply
    8,579.39x = 11,836.03 × 5,221.65
  4. Step 4: Simplify right side
    8,579.39x = 61,803,593.00
  5. Step 5: Solve for x
    x = 61,803,593.00/8,579.39
  6. Step 6: Final answer
    x = 7,203.73

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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.