Home / 4,987.80-7,481.66-2,768.00

Finding the Fourth Proportional to 4,987.80, 7,481.66 and 2,768.00

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Solution

The fourth proportional to 4,987.80, 7,481.66 and 2,768.00 is: 4,151.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.80 : 7,481.66 = 2,768.00 : x
  2. Step 2: Convert to fraction form
    4,987.80/7,481.66 = 2,768.00/x
  3. Step 3: Cross multiply
    4,987.80x = 7,481.66 × 2,768.00
  4. Step 4: Simplify right side
    4,987.80x = 20,709,183.63
  5. Step 5: Solve for x
    x = 20,709,183.63/4,987.80
  6. Step 6: Final answer
    x = 4,151.97

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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.