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Finding the Fourth Proportional to 8,308.80, 11,452.66 and 7,229.32

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Solution

The fourth proportional to 8,308.80, 11,452.66 and 7,229.32 is: 9,964.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,308.80 : 11,452.66 = 7,229.32 : x
  2. Step 2: Convert to fraction form
    8,308.80/11,452.66 = 7,229.32/x
  3. Step 3: Cross multiply
    8,308.80x = 11,452.66 × 7,229.32
  4. Step 4: Simplify right side
    8,308.80x = 82,794,897.29
  5. Step 5: Solve for x
    x = 82,794,897.29/8,308.80
  6. Step 6: Final answer
    x = 9,964.72

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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.