Home / 2,578.38-3,868.06-1,172.90

Finding the Fourth Proportional to 2,578.38, 3,868.06 and 1,172.90

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Solution

The fourth proportional to 2,578.38, 3,868.06 and 1,172.90 is: 1,759.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.38 : 3,868.06 = 1,172.90 : x
  2. Step 2: Convert to fraction form
    2,578.38/3,868.06 = 1,172.90/x
  3. Step 3: Cross multiply
    2,578.38x = 3,868.06 × 1,172.90
  4. Step 4: Simplify right side
    2,578.38x = 4,536,854.31
  5. Step 5: Solve for x
    x = 4,536,854.31/2,578.38
  6. Step 6: Final answer
    x = 1,759.58

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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.