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Finding the Fourth Proportional to 3,806.92, 5,702.80 and 1,853.20

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Solution

The fourth proportional to 3,806.92, 5,702.80 and 1,853.20 is: 2,776.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,806.92 : 5,702.80 = 1,853.20 : x
  2. Step 2: Convert to fraction form
    3,806.92/5,702.80 = 1,853.20/x
  3. Step 3: Cross multiply
    3,806.92x = 5,702.80 × 1,853.20
  4. Step 4: Simplify right side
    3,806.92x = 10,568,428.96
  5. Step 5: Solve for x
    x = 10,568,428.96/3,806.92
  6. Step 6: Final answer
    x = 2,776.11

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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.