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Finding the Fourth Proportional to 8,255.71, 12,386.40 and 3,326.86

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Solution

The fourth proportional to 8,255.71, 12,386.40 and 3,326.86 is: 4,991.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,255.71 : 12,386.40 = 3,326.86 : x
  2. Step 2: Convert to fraction form
    8,255.71/12,386.40 = 3,326.86/x
  3. Step 3: Cross multiply
    8,255.71x = 12,386.40 × 3,326.86
  4. Step 4: Simplify right side
    8,255.71x = 41,207,818.70
  5. Step 5: Solve for x
    x = 41,207,818.70/8,255.71
  6. Step 6: Final answer
    x = 4,991.43

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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.