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Finding the Fourth Proportional to 9,305.13, 12,859.11 and 6,800.61

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Solution

The fourth proportional to 9,305.13, 12,859.11 and 6,800.61 is: 9,398.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,305.13 : 12,859.11 = 6,800.61 : x
  2. Step 2: Convert to fraction form
    9,305.13/12,859.11 = 6,800.61/x
  3. Step 3: Cross multiply
    9,305.13x = 12,859.11 × 6,800.61
  4. Step 4: Simplify right side
    9,305.13x = 87,449,792.06
  5. Step 5: Solve for x
    x = 87,449,792.06/9,305.13
  6. Step 6: Final answer
    x = 9,398.02

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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.