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Finding the Fourth Proportional to 6,659.84, 9,939.11 and 5,921.75

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Solution

The fourth proportional to 6,659.84, 9,939.11 and 5,921.75 is: 8,837.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,659.84 : 9,939.11 = 5,921.75 : x
  2. Step 2: Convert to fraction form
    6,659.84/9,939.11 = 5,921.75/x
  3. Step 3: Cross multiply
    6,659.84x = 9,939.11 × 5,921.75
  4. Step 4: Simplify right side
    6,659.84x = 58,856,845.34
  5. Step 5: Solve for x
    x = 58,856,845.34/6,659.84
  6. Step 6: Final answer
    x = 8,837.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.