Home / 10,519.37-15,781.79-3,945.68

Finding the Fourth Proportional to 10,519.37, 15,781.79 and 3,945.68

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Solution

The fourth proportional to 10,519.37, 15,781.79 and 3,945.68 is: 5,919.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,519.37 : 15,781.79 = 3,945.68 : x
  2. Step 2: Convert to fraction form
    10,519.37/15,781.79 = 3,945.68/x
  3. Step 3: Cross multiply
    10,519.37x = 15,781.79 × 3,945.68
  4. Step 4: Simplify right side
    10,519.37x = 62,269,824.12
  5. Step 5: Solve for x
    x = 62,269,824.12/10,519.37
  6. Step 6: Final answer
    x = 5,919.54

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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.