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Finding the Fourth Proportional to 8,369.88, 11,553.54 and 7,186.20

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Solution

The fourth proportional to 8,369.88, 11,553.54 and 7,186.20 is: 9,919.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,369.88 : 11,553.54 = 7,186.20 : x
  2. Step 2: Convert to fraction form
    8,369.88/11,553.54 = 7,186.20/x
  3. Step 3: Cross multiply
    8,369.88x = 11,553.54 × 7,186.20
  4. Step 4: Simplify right side
    8,369.88x = 83,026,049.15
  5. Step 5: Solve for x
    x = 83,026,049.15/8,369.88
  6. Step 6: Final answer
    x = 9,919.62

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Double scale
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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.