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Finding the Fourth Proportional to 8,719.06, 12,010.94 and 6,321.99

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Solution

The fourth proportional to 8,719.06, 12,010.94 and 6,321.99 is: 8,708.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,719.06 : 12,010.94 = 6,321.99 : x
  2. Step 2: Convert to fraction form
    8,719.06/12,010.94 = 6,321.99/x
  3. Step 3: Cross multiply
    8,719.06x = 12,010.94 × 6,321.99
  4. Step 4: Simplify right side
    8,719.06x = 75,933,013.33
  5. Step 5: Solve for x
    x = 75,933,013.33/8,719.06
  6. Step 6: Final answer
    x = 8,708.86

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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.