Home / 4,080.90-6,121.35-3,424.80

Finding the Fourth Proportional to 4,080.90, 6,121.35 and 3,424.80

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Solution

The fourth proportional to 4,080.90, 6,121.35 and 3,424.80 is: 5,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,080.90 : 6,121.35 = 3,424.80 : x
  2. Step 2: Convert to fraction form
    4,080.90/6,121.35 = 3,424.80/x
  3. Step 3: Cross multiply
    4,080.90x = 6,121.35 × 3,424.80
  4. Step 4: Simplify right side
    4,080.90x = 20,964,399.48
  5. Step 5: Solve for x
    x = 20,964,399.48/4,080.90
  6. Step 6: Final answer
    x = 5,137.20

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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.