Home / 5,518.60-8,278.81-2,185.85

Finding the Fourth Proportional to 5,518.60, 8,278.81 and 2,185.85

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Solution

The fourth proportional to 5,518.60, 8,278.81 and 2,185.85 is: 3,279.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.60 : 8,278.81 = 2,185.85 : x
  2. Step 2: Convert to fraction form
    5,518.60/8,278.81 = 2,185.85/x
  3. Step 3: Cross multiply
    5,518.60x = 8,278.81 × 2,185.85
  4. Step 4: Simplify right side
    5,518.60x = 18,096,252.07
  5. Step 5: Solve for x
    x = 18,096,252.07/5,518.60
  6. Step 6: Final answer
    x = 3,279.14

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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.