Home / 2,151.59-3,227.40-918.36

Finding the Fourth Proportional to 2,151.59, 3,227.40 and 918.36

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Solution

The fourth proportional to 2,151.59, 3,227.40 and 918.36 is: 1,377.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.59 : 3,227.40 = 918.36 : x
  2. Step 2: Convert to fraction form
    2,151.59/3,227.40 = 918.36/x
  3. Step 3: Cross multiply
    2,151.59x = 3,227.40 × 918.36
  4. Step 4: Simplify right side
    2,151.59x = 2,963,910.47
  5. Step 5: Solve for x
    x = 2,963,910.47/2,151.59
  6. Step 6: Final answer
    x = 1,377.55

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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.