Home / 3,109.25-4,663.92-800.75

Finding the Fourth Proportional to 3,109.25, 4,663.92 and 800.75

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Solution

The fourth proportional to 3,109.25, 4,663.92 and 800.75 is: 1,201.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.25 : 4,663.92 = 800.75 : x
  2. Step 2: Convert to fraction form
    3,109.25/4,663.92 = 800.75/x
  3. Step 3: Cross multiply
    3,109.25x = 4,663.92 × 800.75
  4. Step 4: Simplify right side
    3,109.25x = 3,734,633.94
  5. Step 5: Solve for x
    x = 3,734,633.94/3,109.25
  6. Step 6: Final answer
    x = 1,201.14

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1.5x scale

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.