Home / 1,977.25-2,728.33-1,137.64

Finding the Fourth Proportional to 1,977.25, 2,728.33 and 1,137.64

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Solution

The fourth proportional to 1,977.25, 2,728.33 and 1,137.64 is: 1,569.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.25 : 2,728.33 = 1,137.64 : x
  2. Step 2: Convert to fraction form
    1,977.25/2,728.33 = 1,137.64/x
  3. Step 3: Cross multiply
    1,977.25x = 2,728.33 × 1,137.64
  4. Step 4: Simplify right side
    1,977.25x = 3,103,843.70
  5. Step 5: Solve for x
    x = 3,103,843.70/1,977.25
  6. Step 6: Final answer
    x = 1,569.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.