Home / 1,293.44-1,939.96-427.56

Finding the Fourth Proportional to 1,293.44, 1,939.96 and 427.56

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Solution

The fourth proportional to 1,293.44, 1,939.96 and 427.56 is: 641.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.44 : 1,939.96 = 427.56 : x
  2. Step 2: Convert to fraction form
    1,293.44/1,939.96 = 427.56/x
  3. Step 3: Cross multiply
    1,293.44x = 1,939.96 × 427.56
  4. Step 4: Simplify right side
    1,293.44x = 829,449.30
  5. Step 5: Solve for x
    x = 829,449.30/1,293.44
  6. Step 6: Final answer
    x = 641.27

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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.