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Finding the Fourth Proportional to 8,356.68, 11,553.84 and 7,989.48

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Solution

The fourth proportional to 8,356.68, 11,553.84 and 7,989.48 is: 11,046.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,356.68 : 11,553.84 = 7,989.48 : x
  2. Step 2: Convert to fraction form
    8,356.68/11,553.84 = 7,989.48/x
  3. Step 3: Cross multiply
    8,356.68x = 11,553.84 × 7,989.48
  4. Step 4: Simplify right side
    8,356.68x = 92,309,173.60
  5. Step 5: Solve for x
    x = 92,309,173.60/8,356.68
  6. Step 6: Final answer
    x = 11,046.15

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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.