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Finding the Fourth Proportional to 8,305.88, 12,436.14 and 8,085.56

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Solution

The fourth proportional to 8,305.88, 12,436.14 and 8,085.56 is: 12,106.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,305.88 : 12,436.14 = 8,085.56 : x
  2. Step 2: Convert to fraction form
    8,305.88/12,436.14 = 8,085.56/x
  3. Step 3: Cross multiply
    8,305.88x = 12,436.14 × 8,085.56
  4. Step 4: Simplify right side
    8,305.88x = 100,553,156.14
  5. Step 5: Solve for x
    x = 100,553,156.14/8,305.88
  6. Step 6: Final answer
    x = 12,106.26

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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.