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Finding the Fourth Proportional to 3,189.44, 4,784.16 and 880.88

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Solution

The fourth proportional to 3,189.44, 4,784.16 and 880.88 is: 1,321.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.44 : 4,784.16 = 880.88 : x
  2. Step 2: Convert to fraction form
    3,189.44/4,784.16 = 880.88/x
  3. Step 3: Cross multiply
    3,189.44x = 4,784.16 × 880.88
  4. Step 4: Simplify right side
    3,189.44x = 4,214,270.86
  5. Step 5: Solve for x
    x = 4,214,270.86/3,189.44
  6. Step 6: Final answer
    x = 1,321.32

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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.