Home / 1,257.38-1,735.20-733.44

Finding the Fourth Proportional to 1,257.38, 1,735.20 and 733.44

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Solution

The fourth proportional to 1,257.38, 1,735.20 and 733.44 is: 1,012.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257.38 : 1,735.20 = 733.44 : x
  2. Step 2: Convert to fraction form
    1,257.38/1,735.20 = 733.44/x
  3. Step 3: Cross multiply
    1,257.38x = 1,735.20 × 733.44
  4. Step 4: Simplify right side
    1,257.38x = 1,272,665.09
  5. Step 5: Solve for x
    x = 1,272,665.09/1,257.38
  6. Step 6: Final answer
    x = 1,012.16

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1.5x scale

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.