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Finding the Fourth Proportional to 8,207.80, 12,311.70 and 2,364.60

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Solution

The fourth proportional to 8,207.80, 12,311.70 and 2,364.60 is: 3,546.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,207.80 : 12,311.70 = 2,364.60 : x
  2. Step 2: Convert to fraction form
    8,207.80/12,311.70 = 2,364.60/x
  3. Step 3: Cross multiply
    8,207.80x = 12,311.70 × 2,364.60
  4. Step 4: Simplify right side
    8,207.80x = 29,112,245.82
  5. Step 5: Solve for x
    x = 29,112,245.82/8,207.80
  6. Step 6: Final answer
    x = 3,546.90

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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.