Home / 5,518.40-8,272.20-2,227.10

Finding the Fourth Proportional to 5,518.40, 8,272.20 and 2,227.10

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Solution

The fourth proportional to 5,518.40, 8,272.20 and 2,227.10 is: 3,338.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.40 : 8,272.20 = 2,227.10 : x
  2. Step 2: Convert to fraction form
    5,518.40/8,272.20 = 2,227.10/x
  3. Step 3: Cross multiply
    5,518.40x = 8,272.20 × 2,227.10
  4. Step 4: Simplify right side
    5,518.40x = 18,423,016.62
  5. Step 5: Solve for x
    x = 18,423,016.62/5,518.40
  6. Step 6: Final answer
    x = 3,338.47

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1.5x scale

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.