Home / 1,274.90-1,757.97-1,107.63

Finding the Fourth Proportional to 1,274.90, 1,757.97 and 1,107.63

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Solution

The fourth proportional to 1,274.90, 1,757.97 and 1,107.63 is: 1,527.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274.90 : 1,757.97 = 1,107.63 : x
  2. Step 2: Convert to fraction form
    1,274.90/1,757.97 = 1,107.63/x
  3. Step 3: Cross multiply
    1,274.90x = 1,757.97 × 1,107.63
  4. Step 4: Simplify right side
    1,274.90x = 1,947,180.31
  5. Step 5: Solve for x
    x = 1,947,180.31/1,274.90
  6. Step 6: Final answer
    x = 1,527.33

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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.