Home / 4,765.43-7,149.96-1,991.31

Finding the Fourth Proportional to 4,765.43, 7,149.96 and 1,991.31

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Solution

The fourth proportional to 4,765.43, 7,149.96 and 1,991.31 is: 2,987.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,765.43 : 7,149.96 = 1,991.31 : x
  2. Step 2: Convert to fraction form
    4,765.43/7,149.96 = 1,991.31/x
  3. Step 3: Cross multiply
    4,765.43x = 7,149.96 × 1,991.31
  4. Step 4: Simplify right side
    4,765.43x = 14,237,786.85
  5. Step 5: Solve for x
    x = 14,237,786.85/4,765.43
  6. Step 6: Final answer
    x = 2,987.73

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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.