Home / 5,451.20-8,179.50-2,164.22

Finding the Fourth Proportional to 5,451.20, 8,179.50 and 2,164.22

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Solution

The fourth proportional to 5,451.20, 8,179.50 and 2,164.22 is: 3,247.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,451.20 : 8,179.50 = 2,164.22 : x
  2. Step 2: Convert to fraction form
    5,451.20/8,179.50 = 2,164.22/x
  3. Step 3: Cross multiply
    5,451.20x = 8,179.50 × 2,164.22
  4. Step 4: Simplify right side
    5,451.20x = 17,702,237.49
  5. Step 5: Solve for x
    x = 17,702,237.49/5,451.20
  6. Step 6: Final answer
    x = 3,247.40

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Double scale
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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.