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Finding the Fourth Proportional to 8,553.97, 11,809.39 and 6,521.43

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Solution

The fourth proportional to 8,553.97, 11,809.39 and 6,521.43 is: 9,003.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,553.97 : 11,809.39 = 6,521.43 : x
  2. Step 2: Convert to fraction form
    8,553.97/11,809.39 = 6,521.43/x
  3. Step 3: Cross multiply
    8,553.97x = 11,809.39 × 6,521.43
  4. Step 4: Simplify right side
    8,553.97x = 77,014,110.23
  5. Step 5: Solve for x
    x = 77,014,110.23/8,553.97
  6. Step 6: Final answer
    x = 9,003.32

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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.