Home / 1,268.32-1,902.48-923.85

Finding the Fourth Proportional to 1,268.32, 1,902.48 and 923.85

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Solution

The fourth proportional to 1,268.32, 1,902.48 and 923.85 is: 1,385.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.32 : 1,902.48 = 923.85 : x
  2. Step 2: Convert to fraction form
    1,268.32/1,902.48 = 923.85/x
  3. Step 3: Cross multiply
    1,268.32x = 1,902.48 × 923.85
  4. Step 4: Simplify right side
    1,268.32x = 1,757,606.15
  5. Step 5: Solve for x
    x = 1,757,606.15/1,268.32
  6. Step 6: Final answer
    x = 1,385.78

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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.