Home / 1,132.28-1,561.56-758.87

Finding the Fourth Proportional to 1,132.28, 1,561.56 and 758.87

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Solution

The fourth proportional to 1,132.28, 1,561.56 and 758.87 is: 1,046.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.28 : 1,561.56 = 758.87 : x
  2. Step 2: Convert to fraction form
    1,132.28/1,561.56 = 758.87/x
  3. Step 3: Cross multiply
    1,132.28x = 1,561.56 × 758.87
  4. Step 4: Simplify right side
    1,132.28x = 1,185,013.23
  5. Step 5: Solve for x
    x = 1,185,013.23/1,132.28
  6. Step 6: Final answer
    x = 1,046.58

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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.