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Finding the Fourth Proportional to 8,446.57, 12,670.29 and 3,765.78

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Solution

The fourth proportional to 8,446.57, 12,670.29 and 3,765.78 is: 5,648.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,446.57 : 12,670.29 = 3,765.78 : x
  2. Step 2: Convert to fraction form
    8,446.57/12,670.29 = 3,765.78/x
  3. Step 3: Cross multiply
    8,446.57x = 12,670.29 × 3,765.78
  4. Step 4: Simplify right side
    8,446.57x = 47,713,524.68
  5. Step 5: Solve for x
    x = 47,713,524.68/8,446.57
  6. Step 6: Final answer
    x = 5,648.87

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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.