Home / 3,985.31-5,981.07-2,761.31

Finding the Fourth Proportional to 3,985.31, 5,981.07 and 2,761.31

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Solution

The fourth proportional to 3,985.31, 5,981.07 and 2,761.31 is: 4,144.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.31 : 5,981.07 = 2,761.31 : x
  2. Step 2: Convert to fraction form
    3,985.31/5,981.07 = 2,761.31/x
  3. Step 3: Cross multiply
    3,985.31x = 5,981.07 × 2,761.31
  4. Step 4: Simplify right side
    3,985.31x = 16,515,558.50
  5. Step 5: Solve for x
    x = 16,515,558.50/3,985.31
  6. Step 6: Final answer
    x = 4,144.11

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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.