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Finding the Fourth Proportional to 5,321.37, 7,982.06 and 1,425.81

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Solution

The fourth proportional to 5,321.37, 7,982.06 and 1,425.81 is: 2,138.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,321.37 : 7,982.06 = 1,425.81 : x
  2. Step 2: Convert to fraction form
    5,321.37/7,982.06 = 1,425.81/x
  3. Step 3: Cross multiply
    5,321.37x = 7,982.06 × 1,425.81
  4. Step 4: Simplify right side
    5,321.37x = 11,380,893.84
  5. Step 5: Solve for x
    x = 11,380,893.84/5,321.37
  6. Step 6: Final answer
    x = 2,138.72

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Similar ratio
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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.