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Finding the Fourth Proportional to 3,986.96, 5,985.84 and 2,751.32

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Solution

The fourth proportional to 3,986.96, 5,985.84 and 2,751.32 is: 4,130.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.96 : 5,985.84 = 2,751.32 : x
  2. Step 2: Convert to fraction form
    3,986.96/5,985.84 = 2,751.32/x
  3. Step 3: Cross multiply
    3,986.96x = 5,985.84 × 2,751.32
  4. Step 4: Simplify right side
    3,986.96x = 16,468,961.31
  5. Step 5: Solve for x
    x = 16,468,961.31/3,986.96
  6. Step 6: Final answer
    x = 4,130.71

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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.