Home / 1,912.75-2,637.16-1,282.28

Finding the Fourth Proportional to 1,912.75, 2,637.16 and 1,282.28

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Solution

The fourth proportional to 1,912.75, 2,637.16 and 1,282.28 is: 1,767.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.75 : 2,637.16 = 1,282.28 : x
  2. Step 2: Convert to fraction form
    1,912.75/2,637.16 = 1,282.28/x
  3. Step 3: Cross multiply
    1,912.75x = 2,637.16 × 1,282.28
  4. Step 4: Simplify right side
    1,912.75x = 3,381,575.97
  5. Step 5: Solve for x
    x = 3,381,575.97/1,912.75
  6. Step 6: Final answer
    x = 1,767.91

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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.