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Finding the Fourth Proportional to 3,778.38, 5,659.31 and 2,679.41

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Solution

The fourth proportional to 3,778.38, 5,659.31 and 2,679.41 is: 4,013.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.38 : 5,659.31 = 2,679.41 : x
  2. Step 2: Convert to fraction form
    3,778.38/5,659.31 = 2,679.41/x
  3. Step 3: Cross multiply
    3,778.38x = 5,659.31 × 2,679.41
  4. Step 4: Simplify right side
    3,778.38x = 15,163,611.81
  5. Step 5: Solve for x
    x = 15,163,611.81/3,778.38
  6. Step 6: Final answer
    x = 4,013.26

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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.