Home / 4,139.20-6,208.80-3,863.80

Finding the Fourth Proportional to 4,139.20, 6,208.80 and 3,863.80

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Solution

The fourth proportional to 4,139.20, 6,208.80 and 3,863.80 is: 5,795.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,139.20 : 6,208.80 = 3,863.80 : x
  2. Step 2: Convert to fraction form
    4,139.20/6,208.80 = 3,863.80/x
  3. Step 3: Cross multiply
    4,139.20x = 6,208.80 × 3,863.80
  4. Step 4: Simplify right side
    4,139.20x = 23,989,561.44
  5. Step 5: Solve for x
    x = 23,989,561.44/4,139.20
  6. Step 6: Final answer
    x = 5,795.70

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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.