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Finding the Fourth Proportional to 2,763.54, 4,143.24 and 913.56

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Solution

The fourth proportional to 2,763.54, 4,143.24 and 913.56 is: 1,369.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,763.54 : 4,143.24 = 913.56 : x
  2. Step 2: Convert to fraction form
    2,763.54/4,143.24 = 913.56/x
  3. Step 3: Cross multiply
    2,763.54x = 4,143.24 × 913.56
  4. Step 4: Simplify right side
    2,763.54x = 3,785,098.33
  5. Step 5: Solve for x
    x = 3,785,098.33/2,763.54
  6. Step 6: Final answer
    x = 1,369.66

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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.