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Finding the Fourth Proportional to 3,891.07, 5,835.82 and 1,425.05

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Solution

The fourth proportional to 3,891.07, 5,835.82 and 1,425.05 is: 2,137.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.07 : 5,835.82 = 1,425.05 : x
  2. Step 2: Convert to fraction form
    3,891.07/5,835.82 = 1,425.05/x
  3. Step 3: Cross multiply
    3,891.07x = 5,835.82 × 1,425.05
  4. Step 4: Simplify right side
    3,891.07x = 8,316,335.29
  5. Step 5: Solve for x
    x = 8,316,335.29/3,891.07
  6. Step 6: Final answer
    x = 2,137.29

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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.