Home / 5,418.57-8,121.21-3,080.53

Finding the Fourth Proportional to 5,418.57, 8,121.21 and 3,080.53

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Solution

The fourth proportional to 5,418.57, 8,121.21 and 3,080.53 is: 4,617.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.57 : 8,121.21 = 3,080.53 : x
  2. Step 2: Convert to fraction form
    5,418.57/8,121.21 = 3,080.53/x
  3. Step 3: Cross multiply
    5,418.57x = 8,121.21 × 3,080.53
  4. Step 4: Simplify right side
    5,418.57x = 25,017,629.64
  5. Step 5: Solve for x
    x = 25,017,629.64/5,418.57
  6. Step 6: Final answer
    x = 4,617.01

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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.