Home / 2,110.78-2,912.79-1,166.55

Finding the Fourth Proportional to 2,110.78, 2,912.79 and 1,166.55

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Solution

The fourth proportional to 2,110.78, 2,912.79 and 1,166.55 is: 1,609.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.78 : 2,912.79 = 1,166.55 : x
  2. Step 2: Convert to fraction form
    2,110.78/2,912.79 = 1,166.55/x
  3. Step 3: Cross multiply
    2,110.78x = 2,912.79 × 1,166.55
  4. Step 4: Simplify right side
    2,110.78x = 3,397,915.17
  5. Step 5: Solve for x
    x = 3,397,915.17/2,110.78
  6. Step 6: Final answer
    x = 1,609.79

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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.