Home / 1,268.82-1,752.26-1,131.30

Finding the Fourth Proportional to 1,268.82, 1,752.26 and 1,131.30

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Solution

The fourth proportional to 1,268.82, 1,752.26 and 1,131.30 is: 1,562.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.82 : 1,752.26 = 1,131.30 : x
  2. Step 2: Convert to fraction form
    1,268.82/1,752.26 = 1,131.30/x
  3. Step 3: Cross multiply
    1,268.82x = 1,752.26 × 1,131.30
  4. Step 4: Simplify right side
    1,268.82x = 1,982,326.08
  5. Step 5: Solve for x
    x = 1,982,326.08/1,268.82
  6. Step 6: Final answer
    x = 1,562.34

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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.