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Finding the Fourth Proportional to 2,578.48, 3,863.88 and 2,119.48

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Solution

The fourth proportional to 2,578.48, 3,863.88 and 2,119.48 is: 3,176.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.48 : 3,863.88 = 2,119.48 : x
  2. Step 2: Convert to fraction form
    2,578.48/3,863.88 = 2,119.48/x
  3. Step 3: Cross multiply
    2,578.48x = 3,863.88 × 2,119.48
  4. Step 4: Simplify right side
    2,578.48x = 8,189,416.38
  5. Step 5: Solve for x
    x = 8,189,416.38/2,578.48
  6. Step 6: Final answer
    x = 3,176.06

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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.