Home / 3,985.14-5,979.38-2,135.76

Finding the Fourth Proportional to 3,985.14, 5,979.38 and 2,135.76

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Solution

The fourth proportional to 3,985.14, 5,979.38 and 2,135.76 is: 3,204.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.14 : 5,979.38 = 2,135.76 : x
  2. Step 2: Convert to fraction form
    3,985.14/5,979.38 = 2,135.76/x
  3. Step 3: Cross multiply
    3,985.14x = 5,979.38 × 2,135.76
  4. Step 4: Simplify right side
    3,985.14x = 12,770,520.63
  5. Step 5: Solve for x
    x = 12,770,520.63/3,985.14
  6. Step 6: Final answer
    x = 3,204.54

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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.