Home / 5,581.13-8,366.72-2,120.81

Finding the Fourth Proportional to 5,581.13, 8,366.72 and 2,120.81

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Solution

The fourth proportional to 5,581.13, 8,366.72 and 2,120.81 is: 3,179.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.13 : 8,366.72 = 2,120.81 : x
  2. Step 2: Convert to fraction form
    5,581.13/8,366.72 = 2,120.81/x
  3. Step 3: Cross multiply
    5,581.13x = 8,366.72 × 2,120.81
  4. Step 4: Simplify right side
    5,581.13x = 17,744,171.01
  5. Step 5: Solve for x
    x = 17,744,171.01/5,581.13
  6. Step 6: Final answer
    x = 3,179.32

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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.