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Finding the Fourth Proportional to 5,520.96, 8,281.44 and 3,784.32

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Solution

The fourth proportional to 5,520.96, 8,281.44 and 3,784.32 is: 5,676.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,520.96 : 8,281.44 = 3,784.32 : x
  2. Step 2: Convert to fraction form
    5,520.96/8,281.44 = 3,784.32/x
  3. Step 3: Cross multiply
    5,520.96x = 8,281.44 × 3,784.32
  4. Step 4: Simplify right side
    5,520.96x = 31,339,619.02
  5. Step 5: Solve for x
    x = 31,339,619.02/5,520.96
  6. Step 6: Final answer
    x = 5,676.48

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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.