Home / 5,452.45-8,179.88-1,989.70

Finding the Fourth Proportional to 5,452.45, 8,179.88 and 1,989.70

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Solution

The fourth proportional to 5,452.45, 8,179.88 and 1,989.70 is: 2,984.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,452.45 : 8,179.88 = 1,989.70 : x
  2. Step 2: Convert to fraction form
    5,452.45/8,179.88 = 1,989.70/x
  3. Step 3: Cross multiply
    5,452.45x = 8,179.88 × 1,989.70
  4. Step 4: Simplify right side
    5,452.45x = 16,275,507.24
  5. Step 5: Solve for x
    x = 16,275,507.24/5,452.45
  6. Step 6: Final answer
    x = 2,984.99

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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.