Home / 1,912.16-2,635.43-1,645.94

Finding the Fourth Proportional to 1,912.16, 2,635.43 and 1,645.94

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Solution

The fourth proportional to 1,912.16, 2,635.43 and 1,645.94 is: 2,268.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.16 : 2,635.43 = 1,645.94 : x
  2. Step 2: Convert to fraction form
    1,912.16/2,635.43 = 1,645.94/x
  3. Step 3: Cross multiply
    1,912.16x = 2,635.43 × 1,645.94
  4. Step 4: Simplify right side
    1,912.16x = 4,337,759.65
  5. Step 5: Solve for x
    x = 4,337,759.65/1,912.16
  6. Step 6: Final answer
    x = 2,268.51

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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.