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Finding the Fourth Proportional to 8,553.62, 11,808.90 and 6,521.09

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Solution

The fourth proportional to 8,553.62, 11,808.90 and 6,521.09 is: 9,002.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,553.62 : 11,808.90 = 6,521.09 : x
  2. Step 2: Convert to fraction form
    8,553.62/11,808.90 = 6,521.09/x
  3. Step 3: Cross multiply
    8,553.62x = 11,808.90 × 6,521.09
  4. Step 4: Simplify right side
    8,553.62x = 77,006,840.66
  5. Step 5: Solve for x
    x = 77,006,840.66/8,553.62
  6. Step 6: Final answer
    x = 9,002.83

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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.