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Finding the Fourth Proportional to 3,984.26, 5,978.94 and 1,675.76

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Solution

The fourth proportional to 3,984.26, 5,978.94 and 1,675.76 is: 2,514.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.26 : 5,978.94 = 1,675.76 : x
  2. Step 2: Convert to fraction form
    3,984.26/5,978.94 = 1,675.76/x
  3. Step 3: Cross multiply
    3,984.26x = 5,978.94 × 1,675.76
  4. Step 4: Simplify right side
    3,984.26x = 10,019,268.49
  5. Step 5: Solve for x
    x = 10,019,268.49/3,984.26
  6. Step 6: Final answer
    x = 2,514.71

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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.