Home / 1,330.91-1,996.37-918.82

Finding the Fourth Proportional to 1,330.91, 1,996.37 and 918.82

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Solution

The fourth proportional to 1,330.91, 1,996.37 and 918.82 is: 1,378.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.91 : 1,996.37 = 918.82 : x
  2. Step 2: Convert to fraction form
    1,330.91/1,996.37 = 918.82/x
  3. Step 3: Cross multiply
    1,330.91x = 1,996.37 × 918.82
  4. Step 4: Simplify right side
    1,330.91x = 1,834,304.68
  5. Step 5: Solve for x
    x = 1,834,304.68/1,330.91
  6. Step 6: Final answer
    x = 1,378.23

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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.