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Finding the Fourth Proportional to 8,723.56, 12,029.46 and 8,040.04

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Solution

The fourth proportional to 8,723.56, 12,029.46 and 8,040.04 is: 11,086.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,723.56 : 12,029.46 = 8,040.04 : x
  2. Step 2: Convert to fraction form
    8,723.56/12,029.46 = 8,040.04/x
  3. Step 3: Cross multiply
    8,723.56x = 12,029.46 × 8,040.04
  4. Step 4: Simplify right side
    8,723.56x = 96,717,339.58
  5. Step 5: Solve for x
    x = 96,717,339.58/8,723.56
  6. Step 6: Final answer
    x = 11,086.91

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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.