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Finding the Fourth Proportional to 8,333.41, 12,491.40 and 3,945.64

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Solution

The fourth proportional to 8,333.41, 12,491.40 and 3,945.64 is: 5,914.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,333.41 : 12,491.40 = 3,945.64 : x
  2. Step 2: Convert to fraction form
    8,333.41/12,491.40 = 3,945.64/x
  3. Step 3: Cross multiply
    8,333.41x = 12,491.40 × 3,945.64
  4. Step 4: Simplify right side
    8,333.41x = 49,286,485.31
  5. Step 5: Solve for x
    x = 49,286,485.31/8,333.41
  6. Step 6: Final answer
    x = 5,914.33

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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.