Home / 2,578.32-3,867.44-630.54

Finding the Fourth Proportional to 2,578.32, 3,867.44 and 630.54

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Solution

The fourth proportional to 2,578.32, 3,867.44 and 630.54 is: 945.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.32 : 3,867.44 = 630.54 : x
  2. Step 2: Convert to fraction form
    2,578.32/3,867.44 = 630.54/x
  3. Step 3: Cross multiply
    2,578.32x = 3,867.44 × 630.54
  4. Step 4: Simplify right side
    2,578.32x = 2,438,553.13
  5. Step 5: Solve for x
    x = 2,438,553.13/2,578.32
  6. Step 6: Final answer
    x = 945.79

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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.