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Finding the Fourth Proportional to 3,718.74, 5,572.19 and 1,963.68

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Solution

The fourth proportional to 3,718.74, 5,572.19 and 1,963.68 is: 2,942.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.74 : 5,572.19 = 1,963.68 : x
  2. Step 2: Convert to fraction form
    3,718.74/5,572.19 = 1,963.68/x
  3. Step 3: Cross multiply
    3,718.74x = 5,572.19 × 1,963.68
  4. Step 4: Simplify right side
    3,718.74x = 10,941,998.06
  5. Step 5: Solve for x
    x = 10,941,998.06/3,718.74
  6. Step 6: Final answer
    x = 2,942.39

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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.