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Finding the Fourth Proportional to 6,212.64, 8,572.32 and 3,559.44

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Solution

The fourth proportional to 6,212.64, 8,572.32 and 3,559.44 is: 4,911.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,212.64 : 8,572.32 = 3,559.44 : x
  2. Step 2: Convert to fraction form
    6,212.64/8,572.32 = 3,559.44/x
  3. Step 3: Cross multiply
    6,212.64x = 8,572.32 × 3,559.44
  4. Step 4: Simplify right side
    6,212.64x = 30,512,658.70
  5. Step 5: Solve for x
    x = 30,512,658.70/6,212.64
  6. Step 6: Final answer
    x = 4,911.38

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.