Home / 5,452.56-8,179.74-1,989

Finding the Fourth Proportional to 5,452.56, 8,179.74 and 1,989

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Solution

The fourth proportional to 5,452.56, 8,179.74 and 1,989 is: 2,983.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,452.56 : 8,179.74 = 1,989 : x
  2. Step 2: Convert to fraction form
    5,452.56/8,179.74 = 1,989/x
  3. Step 3: Cross multiply
    5,452.56x = 8,179.74 × 1,989
  4. Step 4: Simplify right side
    5,452.56x = 16,269,502.86
  5. Step 5: Solve for x
    x = 16,269,502.86/5,452.56
  6. Step 6: Final answer
    x = 2,983.83

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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.