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Finding the Fourth Proportional to 8,620.08, 12,930.16 and 3,425.97

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Solution

The fourth proportional to 8,620.08, 12,930.16 and 3,425.97 is: 5,138.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.08 : 12,930.16 = 3,425.97 : x
  2. Step 2: Convert to fraction form
    8,620.08/12,930.16 = 3,425.97/x
  3. Step 3: Cross multiply
    8,620.08x = 12,930.16 × 3,425.97
  4. Step 4: Simplify right side
    8,620.08x = 44,298,340.26
  5. Step 5: Solve for x
    x = 44,298,340.26/8,620.08
  6. Step 6: Final answer
    x = 5,138.97

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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.