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Finding the Fourth Proportional to 6,679.64, 10,019.46 and 2,781.32

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Solution

The fourth proportional to 6,679.64, 10,019.46 and 2,781.32 is: 4,171.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,679.64 : 10,019.46 = 2,781.32 : x
  2. Step 2: Convert to fraction form
    6,679.64/10,019.46 = 2,781.32/x
  3. Step 3: Cross multiply
    6,679.64x = 10,019.46 × 2,781.32
  4. Step 4: Simplify right side
    6,679.64x = 27,867,324.49
  5. Step 5: Solve for x
    x = 27,867,324.49/6,679.64
  6. Step 6: Final answer
    x = 4,171.98

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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.