Home / 2,255.75-3,112.94-1,371.40

Finding the Fourth Proportional to 2,255.75, 3,112.94 and 1,371.40

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Solution

The fourth proportional to 2,255.75, 3,112.94 and 1,371.40 is: 1,892.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.75 : 3,112.94 = 1,371.40 : x
  2. Step 2: Convert to fraction form
    2,255.75/3,112.94 = 1,371.40/x
  3. Step 3: Cross multiply
    2,255.75x = 3,112.94 × 1,371.40
  4. Step 4: Simplify right side
    2,255.75x = 4,269,085.92
  5. Step 5: Solve for x
    x = 4,269,085.92/2,255.75
  6. Step 6: Final answer
    x = 1,892.54

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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.