Home / 1,915.29-2,640.92-1,635.03

Finding the Fourth Proportional to 1,915.29, 2,640.92 and 1,635.03

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Solution

The fourth proportional to 1,915.29, 2,640.92 and 1,635.03 is: 2,254.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.29 : 2,640.92 = 1,635.03 : x
  2. Step 2: Convert to fraction form
    1,915.29/2,640.92 = 1,635.03/x
  3. Step 3: Cross multiply
    1,915.29x = 2,640.92 × 1,635.03
  4. Step 4: Simplify right side
    1,915.29x = 4,317,975.25
  5. Step 5: Solve for x
    x = 4,317,975.25/1,915.29
  6. Step 6: Final answer
    x = 2,254.48

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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.