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Finding the Fourth Proportional to 8,416.85, 12,625.79 and 3,486.87

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Solution

The fourth proportional to 8,416.85, 12,625.79 and 3,486.87 is: 5,230.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,416.85 : 12,625.79 = 3,486.87 : x
  2. Step 2: Convert to fraction form
    8,416.85/12,625.79 = 3,486.87/x
  3. Step 3: Cross multiply
    8,416.85x = 12,625.79 × 3,486.87
  4. Step 4: Simplify right side
    8,416.85x = 44,024,470.94
  5. Step 5: Solve for x
    x = 44,024,470.94/8,416.85
  6. Step 6: Final answer
    x = 5,230.52

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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.