Home / 5,418.63-8,121.30-3,080.60

Finding the Fourth Proportional to 5,418.63, 8,121.30 and 3,080.60

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Solution

The fourth proportional to 5,418.63, 8,121.30 and 3,080.60 is: 4,617.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.63 : 8,121.30 = 3,080.60 : x
  2. Step 2: Convert to fraction form
    5,418.63/8,121.30 = 3,080.60/x
  3. Step 3: Cross multiply
    5,418.63x = 8,121.30 × 3,080.60
  4. Step 4: Simplify right side
    5,418.63x = 25,018,476.78
  5. Step 5: Solve for x
    x = 25,018,476.78/5,418.63
  6. Step 6: Final answer
    x = 4,617.12

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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.