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Finding the Fourth Proportional to 8,631.26, 11,909.10 and 6,269.30

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Solution

The fourth proportional to 8,631.26, 11,909.10 and 6,269.30 is: 8,650.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.26 : 11,909.10 = 6,269.30 : x
  2. Step 2: Convert to fraction form
    8,631.26/11,909.10 = 6,269.30/x
  3. Step 3: Cross multiply
    8,631.26x = 11,909.10 × 6,269.30
  4. Step 4: Simplify right side
    8,631.26x = 74,661,720.63
  5. Step 5: Solve for x
    x = 74,661,720.63/8,631.26
  6. Step 6: Final answer
    x = 8,650.15

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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.