Home / 6,172.40-8,517.24-3,519.68

Finding the Fourth Proportional to 6,172.40, 8,517.24 and 3,519.68

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Solution

The fourth proportional to 6,172.40, 8,517.24 and 3,519.68 is: 4,856.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,172.40 : 8,517.24 = 3,519.68 : x
  2. Step 2: Convert to fraction form
    6,172.40/8,517.24 = 3,519.68/x
  3. Step 3: Cross multiply
    6,172.40x = 8,517.24 × 3,519.68
  4. Step 4: Simplify right side
    6,172.40x = 29,977,959.28
  5. Step 5: Solve for x
    x = 29,977,959.28/6,172.40
  6. Step 6: Final answer
    x = 4,856.78

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Half scale
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Double scale
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1.5x scale

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.