Home / 5,378.20-8,067.30-2,786.20

Finding the Fourth Proportional to 5,378.20, 8,067.30 and 2,786.20

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Solution

The fourth proportional to 5,378.20, 8,067.30 and 2,786.20 is: 4,179.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.20 : 8,067.30 = 2,786.20 : x
  2. Step 2: Convert to fraction form
    5,378.20/8,067.30 = 2,786.20/x
  3. Step 3: Cross multiply
    5,378.20x = 8,067.30 × 2,786.20
  4. Step 4: Simplify right side
    5,378.20x = 22,477,111.26
  5. Step 5: Solve for x
    x = 22,477,111.26/5,378.20
  6. Step 6: Final answer
    x = 4,179.30

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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.