Home / 1,132.36-1,561.49-945.79

Finding the Fourth Proportional to 1,132.36, 1,561.49 and 945.79

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Solution

The fourth proportional to 1,132.36, 1,561.49 and 945.79 is: 1,304.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.36 : 1,561.49 = 945.79 : x
  2. Step 2: Convert to fraction form
    1,132.36/1,561.49 = 945.79/x
  3. Step 3: Cross multiply
    1,132.36x = 1,561.49 × 945.79
  4. Step 4: Simplify right side
    1,132.36x = 1,476,833.82
  5. Step 5: Solve for x
    x = 1,476,833.82/1,132.36
  6. Step 6: Final answer
    x = 1,304.21

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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.