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Finding the Fourth Proportional to 3,889.98, 5,834.97 and 1,425.36

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Solution

The fourth proportional to 3,889.98, 5,834.97 and 1,425.36 is: 2,138.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.98 : 5,834.97 = 1,425.36 : x
  2. Step 2: Convert to fraction form
    3,889.98/5,834.97 = 1,425.36/x
  3. Step 3: Cross multiply
    3,889.98x = 5,834.97 × 1,425.36
  4. Step 4: Simplify right side
    3,889.98x = 8,316,932.84
  5. Step 5: Solve for x
    x = 8,316,932.84/3,889.98
  6. Step 6: Final answer
    x = 2,138.04

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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.