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Finding the Fourth Proportional to 3,195.43, 4,409.38 and 1,868.87

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Solution

The fourth proportional to 3,195.43, 4,409.38 and 1,868.87 is: 2,578.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,195.43 : 4,409.38 = 1,868.87 : x
  2. Step 2: Convert to fraction form
    3,195.43/4,409.38 = 1,868.87/x
  3. Step 3: Cross multiply
    3,195.43x = 4,409.38 × 1,868.87
  4. Step 4: Simplify right side
    3,195.43x = 8,240,572.62
  5. Step 5: Solve for x
    x = 8,240,572.62/3,195.43
  6. Step 6: Final answer
    x = 2,578.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.