Home / 3,987.72-5,976.37-2,486.12

Finding the Fourth Proportional to 3,987.72, 5,976.37 and 2,486.12

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Solution

The fourth proportional to 3,987.72, 5,976.37 and 2,486.12 is: 3,725.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.72 : 5,976.37 = 2,486.12 : x
  2. Step 2: Convert to fraction form
    3,987.72/5,976.37 = 2,486.12/x
  3. Step 3: Cross multiply
    3,987.72x = 5,976.37 × 2,486.12
  4. Step 4: Simplify right side
    3,987.72x = 14,857,972.98
  5. Step 5: Solve for x
    x = 14,857,972.98/3,987.72
  6. Step 6: Final answer
    x = 3,725.93

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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.