Home / 5,455.86-8,183.78-1,992.30

Finding the Fourth Proportional to 5,455.86, 8,183.78 and 1,992.30

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Solution

The fourth proportional to 5,455.86, 8,183.78 and 1,992.30 is: 2,988.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,455.86 : 8,183.78 = 1,992.30 : x
  2. Step 2: Convert to fraction form
    5,455.86/8,183.78 = 1,992.30/x
  3. Step 3: Cross multiply
    5,455.86x = 8,183.78 × 1,992.30
  4. Step 4: Simplify right side
    5,455.86x = 16,304,544.89
  5. Step 5: Solve for x
    x = 16,304,544.89/5,455.86
  6. Step 6: Final answer
    x = 2,988.45

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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.