Home / 5,581.44-8,372.16-2,121.12

Finding the Fourth Proportional to 5,581.44, 8,372.16 and 2,121.12

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Solution

The fourth proportional to 5,581.44, 8,372.16 and 2,121.12 is: 3,181.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.44 : 8,372.16 = 2,121.12 : x
  2. Step 2: Convert to fraction form
    5,581.44/8,372.16 = 2,121.12/x
  3. Step 3: Cross multiply
    5,581.44x = 8,372.16 × 2,121.12
  4. Step 4: Simplify right side
    5,581.44x = 17,758,356.02
  5. Step 5: Solve for x
    x = 17,758,356.02/5,581.44
  6. Step 6: Final answer
    x = 3,181.68

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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.