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Finding the Fourth Proportional to 8,393.67, 12,574.08 and 6,436.31

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Solution

The fourth proportional to 8,393.67, 12,574.08 and 6,436.31 is: 9,641.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,393.67 : 12,574.08 = 6,436.31 : x
  2. Step 2: Convert to fraction form
    8,393.67/12,574.08 = 6,436.31/x
  3. Step 3: Cross multiply
    8,393.67x = 12,574.08 × 6,436.31
  4. Step 4: Simplify right side
    8,393.67x = 80,930,613.97
  5. Step 5: Solve for x
    x = 80,930,613.97/8,393.67
  6. Step 6: Final answer
    x = 9,641.86

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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.