Home / 5,451.94-8,179.12-1,989.18

Finding the Fourth Proportional to 5,451.94, 8,179.12 and 1,989.18

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Solution

The fourth proportional to 5,451.94, 8,179.12 and 1,989.18 is: 2,984.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,451.94 : 8,179.12 = 1,989.18 : x
  2. Step 2: Convert to fraction form
    5,451.94/8,179.12 = 1,989.18/x
  3. Step 3: Cross multiply
    5,451.94x = 8,179.12 × 1,989.18
  4. Step 4: Simplify right side
    5,451.94x = 16,269,741.92
  5. Step 5: Solve for x
    x = 16,269,741.92/5,451.94
  6. Step 6: Final answer
    x = 2,984.21

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Double scale
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Similar ratio
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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.