Home / 1,126.94-1,691.36-664.04

Finding the Fourth Proportional to 1,126.94, 1,691.36 and 664.04

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Solution

The fourth proportional to 1,126.94, 1,691.36 and 664.04 is: 996.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.94 : 1,691.36 = 664.04 : x
  2. Step 2: Convert to fraction form
    1,126.94/1,691.36 = 664.04/x
  3. Step 3: Cross multiply
    1,126.94x = 1,691.36 × 664.04
  4. Step 4: Simplify right side
    1,126.94x = 1,123,123.90
  5. Step 5: Solve for x
    x = 1,123,123.90/1,126.94
  6. Step 6: Final answer
    x = 996.62

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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.