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Finding the Fourth Proportional to 8,360.10, 12,568.91 and 6,728.09

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Solution

The fourth proportional to 8,360.10, 12,568.91 and 6,728.09 is: 10,115.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,360.10 : 12,568.91 = 6,728.09 : x
  2. Step 2: Convert to fraction form
    8,360.10/12,568.91 = 6,728.09/x
  3. Step 3: Cross multiply
    8,360.10x = 12,568.91 × 6,728.09
  4. Step 4: Simplify right side
    8,360.10x = 84,564,661.20
  5. Step 5: Solve for x
    x = 84,564,661.20/8,360.10
  6. Step 6: Final answer
    x = 10,115.27

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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.