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Finding the Fourth Proportional to 8,325.37, 12,479.34 and 3,879.37

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Solution

The fourth proportional to 8,325.37, 12,479.34 and 3,879.37 is: 5,814.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,325.37 : 12,479.34 = 3,879.37 : x
  2. Step 2: Convert to fraction form
    8,325.37/12,479.34 = 3,879.37/x
  3. Step 3: Cross multiply
    8,325.37x = 12,479.34 × 3,879.37
  4. Step 4: Simplify right side
    8,325.37x = 48,411,997.63
  5. Step 5: Solve for x
    x = 48,411,997.63/8,325.37
  6. Step 6: Final answer
    x = 5,814.99

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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.