Home / 5,480.62-8,216.84-1,780.64

Finding the Fourth Proportional to 5,480.62, 8,216.84 and 1,780.64

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Solution

The fourth proportional to 5,480.62, 8,216.84 and 1,780.64 is: 2,669.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,480.62 : 8,216.84 = 1,780.64 : x
  2. Step 2: Convert to fraction form
    5,480.62/8,216.84 = 1,780.64/x
  3. Step 3: Cross multiply
    5,480.62x = 8,216.84 × 1,780.64
  4. Step 4: Simplify right side
    5,480.62x = 14,631,233.98
  5. Step 5: Solve for x
    x = 14,631,233.98/5,480.62
  6. Step 6: Final answer
    x = 2,669.63

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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.