Home / 2,118.96-3,180.57-1,974.38

Finding the Fourth Proportional to 2,118.96, 3,180.57 and 1,974.38

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Solution

The fourth proportional to 2,118.96, 3,180.57 and 1,974.38 is: 2,963.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.96 : 3,180.57 = 1,974.38 : x
  2. Step 2: Convert to fraction form
    2,118.96/3,180.57 = 1,974.38/x
  3. Step 3: Cross multiply
    2,118.96x = 3,180.57 × 1,974.38
  4. Step 4: Simplify right side
    2,118.96x = 6,279,630.49
  5. Step 5: Solve for x
    x = 6,279,630.49/2,118.96
  6. Step 6: Final answer
    x = 2,963.54

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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.