Home / 5,450.58-8,178.18-2,121.15

Finding the Fourth Proportional to 5,450.58, 8,178.18 and 2,121.15

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Solution

The fourth proportional to 5,450.58, 8,178.18 and 2,121.15 is: 3,182.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,450.58 : 8,178.18 = 2,121.15 : x
  2. Step 2: Convert to fraction form
    5,450.58/8,178.18 = 2,121.15/x
  3. Step 3: Cross multiply
    5,450.58x = 8,178.18 × 2,121.15
  4. Step 4: Simplify right side
    5,450.58x = 17,347,135.90
  5. Step 5: Solve for x
    x = 17,347,135.90/5,450.58
  6. Step 6: Final answer
    x = 3,182.62

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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.