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Finding the Fourth Proportional to 8,456.94, 12,685.41 and 2,613.42

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Solution

The fourth proportional to 8,456.94, 12,685.41 and 2,613.42 is: 3,920.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,456.94 : 12,685.41 = 2,613.42 : x
  2. Step 2: Convert to fraction form
    8,456.94/12,685.41 = 2,613.42/x
  3. Step 3: Cross multiply
    8,456.94x = 12,685.41 × 2,613.42
  4. Step 4: Simplify right side
    8,456.94x = 33,152,304.20
  5. Step 5: Solve for x
    x = 33,152,304.20/8,456.94
  6. Step 6: Final answer
    x = 3,920.13

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Similar ratio
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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.