Home / 2,122.17-3,180.06-1,919.87

Finding the Fourth Proportional to 2,122.17, 3,180.06 and 1,919.87

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Solution

The fourth proportional to 2,122.17, 3,180.06 and 1,919.87 is: 2,876.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.17 : 3,180.06 = 1,919.87 : x
  2. Step 2: Convert to fraction form
    2,122.17/3,180.06 = 1,919.87/x
  3. Step 3: Cross multiply
    2,122.17x = 3,180.06 × 1,919.87
  4. Step 4: Simplify right side
    2,122.17x = 6,105,297.82
  5. Step 5: Solve for x
    x = 6,105,297.82/2,122.17
  6. Step 6: Final answer
    x = 2,876.92

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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.