Home / 5,518.32-8,278.56-3,209.28

Finding the Fourth Proportional to 5,518.32, 8,278.56 and 3,209.28

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Solution

The fourth proportional to 5,518.32, 8,278.56 and 3,209.28 is: 4,814.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.32 : 8,278.56 = 3,209.28 : x
  2. Step 2: Convert to fraction form
    5,518.32/8,278.56 = 3,209.28/x
  3. Step 3: Cross multiply
    5,518.32x = 8,278.56 × 3,209.28
  4. Step 4: Simplify right side
    5,518.32x = 26,568,217.04
  5. Step 5: Solve for x
    x = 26,568,217.04/5,518.32
  6. Step 6: Final answer
    x = 4,814.55

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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.