Home / 1,912.26-2,638.90-1,084.26

Finding the Fourth Proportional to 1,912.26, 2,638.90 and 1,084.26

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Solution

The fourth proportional to 1,912.26, 2,638.90 and 1,084.26 is: 1,496.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.26 : 2,638.90 = 1,084.26 : x
  2. Step 2: Convert to fraction form
    1,912.26/2,638.90 = 1,084.26/x
  3. Step 3: Cross multiply
    1,912.26x = 2,638.90 × 1,084.26
  4. Step 4: Simplify right side
    1,912.26x = 2,861,253.71
  5. Step 5: Solve for x
    x = 2,861,253.71/1,912.26
  6. Step 6: Final answer
    x = 1,496.27

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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.