Home / 5,086.25-7,629.38-1,388.48

Finding the Fourth Proportional to 5,086.25, 7,629.38 and 1,388.48

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Solution

The fourth proportional to 5,086.25, 7,629.38 and 1,388.48 is: 2,082.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,086.25 : 7,629.38 = 1,388.48 : x
  2. Step 2: Convert to fraction form
    5,086.25/7,629.38 = 1,388.48/x
  3. Step 3: Cross multiply
    5,086.25x = 7,629.38 × 1,388.48
  4. Step 4: Simplify right side
    5,086.25x = 10,593,196.45
  5. Step 5: Solve for x
    x = 10,593,196.45/5,086.25
  6. Step 6: Final answer
    x = 2,082.71

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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.