Home / 2,151.14-3,226.85-918.54

Finding the Fourth Proportional to 2,151.14, 3,226.85 and 918.54

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Solution

The fourth proportional to 2,151.14, 3,226.85 and 918.54 is: 1,377.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.14 : 3,226.85 = 918.54 : x
  2. Step 2: Convert to fraction form
    2,151.14/3,226.85 = 918.54/x
  3. Step 3: Cross multiply
    2,151.14x = 3,226.85 × 918.54
  4. Step 4: Simplify right side
    2,151.14x = 2,963,986.21
  5. Step 5: Solve for x
    x = 2,963,986.21/2,151.14
  6. Step 6: Final answer
    x = 1,377.87

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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.