Home / 2,578.25-3,859.05-1,343.90

Finding the Fourth Proportional to 2,578.25, 3,859.05 and 1,343.90

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Solution

The fourth proportional to 2,578.25, 3,859.05 and 1,343.90 is: 2,011.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.25 : 3,859.05 = 1,343.90 : x
  2. Step 2: Convert to fraction form
    2,578.25/3,859.05 = 1,343.90/x
  3. Step 3: Cross multiply
    2,578.25x = 3,859.05 × 1,343.90
  4. Step 4: Simplify right side
    2,578.25x = 5,186,177.30
  5. Step 5: Solve for x
    x = 5,186,177.30/2,578.25
  6. Step 6: Final answer
    x = 2,011.51

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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.