Home / 2,578.28-3,863.10-1,805

Finding the Fourth Proportional to 2,578.28, 3,863.10 and 1,805

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Solution

The fourth proportional to 2,578.28, 3,863.10 and 1,805 is: 2,704.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.28 : 3,863.10 = 1,805 : x
  2. Step 2: Convert to fraction form
    2,578.28/3,863.10 = 1,805/x
  3. Step 3: Cross multiply
    2,578.28x = 3,863.10 × 1,805
  4. Step 4: Simplify right side
    2,578.28x = 6,972,895.50
  5. Step 5: Solve for x
    x = 6,972,895.50/2,578.28
  6. Step 6: Final answer
    x = 2,704.48

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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.