Home / 1,278.33-1,917.49-704.85

Finding the Fourth Proportional to 1,278.33, 1,917.49 and 704.85

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Solution

The fourth proportional to 1,278.33, 1,917.49 and 704.85 is: 1,057.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278.33 : 1,917.49 = 704.85 : x
  2. Step 2: Convert to fraction form
    1,278.33/1,917.49 = 704.85/x
  3. Step 3: Cross multiply
    1,278.33x = 1,917.49 × 704.85
  4. Step 4: Simplify right side
    1,278.33x = 1,351,531.48
  5. Step 5: Solve for x
    x = 1,351,531.48/1,278.33
  6. Step 6: Final answer
    x = 1,057.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.