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Finding the Fourth Proportional to 6,659.64, 9,989.42 and 1,729.26

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Solution

The fourth proportional to 6,659.64, 9,989.42 and 1,729.26 is: 2,593.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,659.64 : 9,989.42 = 1,729.26 : x
  2. Step 2: Convert to fraction form
    6,659.64/9,989.42 = 1,729.26/x
  3. Step 3: Cross multiply
    6,659.64x = 9,989.42 × 1,729.26
  4. Step 4: Simplify right side
    6,659.64x = 17,274,295.78
  5. Step 5: Solve for x
    x = 17,274,295.78/6,659.64
  6. Step 6: Final answer
    x = 2,593.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.