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Finding the Fourth Proportional to 8,630.82, 11,902.61 and 6,398.26

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Solution

The fourth proportional to 8,630.82, 11,902.61 and 6,398.26 is: 8,823.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.82 : 11,902.61 = 6,398.26 : x
  2. Step 2: Convert to fraction form
    8,630.82/11,902.61 = 6,398.26/x
  3. Step 3: Cross multiply
    8,630.82x = 11,902.61 × 6,398.26
  4. Step 4: Simplify right side
    8,630.82x = 76,155,979.70
  5. Step 5: Solve for x
    x = 76,155,979.70/8,630.82
  6. Step 6: Final answer
    x = 8,823.72

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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.