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Finding the Fourth Proportional to 8,572.18, 12,843.60 and 4,679.32

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Solution

The fourth proportional to 8,572.18, 12,843.60 and 4,679.32 is: 7,010.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572.18 : 12,843.60 = 4,679.32 : x
  2. Step 2: Convert to fraction form
    8,572.18/12,843.60 = 4,679.32/x
  3. Step 3: Cross multiply
    8,572.18x = 12,843.60 × 4,679.32
  4. Step 4: Simplify right side
    8,572.18x = 60,099,314.35
  5. Step 5: Solve for x
    x = 60,099,314.35/8,572.18
  6. Step 6: Final answer
    x = 7,010.97

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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.