Home / 6,172.30-8,518-3,519.68

Finding the Fourth Proportional to 6,172.30, 8,518 and 3,519.68

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Solution

The fourth proportional to 6,172.30, 8,518 and 3,519.68 is: 4,857.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,172.30 : 8,518 = 3,519.68 : x
  2. Step 2: Convert to fraction form
    6,172.30/8,518 = 3,519.68/x
  3. Step 3: Cross multiply
    6,172.30x = 8,518 × 3,519.68
  4. Step 4: Simplify right side
    6,172.30x = 29,980,634.24
  5. Step 5: Solve for x
    x = 29,980,634.24/6,172.30
  6. Step 6: Final answer
    x = 4,857.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.