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Finding the Fourth Proportional to 8,416.70, 12,606.69 and 6,939.26

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Solution

The fourth proportional to 8,416.70, 12,606.69 and 6,939.26 is: 10,393.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,416.70 : 12,606.69 = 6,939.26 : x
  2. Step 2: Convert to fraction form
    8,416.70/12,606.69 = 6,939.26/x
  3. Step 3: Cross multiply
    8,416.70x = 12,606.69 × 6,939.26
  4. Step 4: Simplify right side
    8,416.70x = 87,481,099.65
  5. Step 5: Solve for x
    x = 87,481,099.65/8,416.70
  6. Step 6: Final answer
    x = 10,393.75

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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.