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Finding the Fourth Proportional to 8,311.58, 12,447.54 and 4,794.18

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Solution

The fourth proportional to 8,311.58, 12,447.54 and 4,794.18 is: 7,179.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,311.58 : 12,447.54 = 4,794.18 : x
  2. Step 2: Convert to fraction form
    8,311.58/12,447.54 = 4,794.18/x
  3. Step 3: Cross multiply
    8,311.58x = 12,447.54 × 4,794.18
  4. Step 4: Simplify right side
    8,311.58x = 59,675,747.32
  5. Step 5: Solve for x
    x = 59,675,747.32/8,311.58
  6. Step 6: Final answer
    x = 7,179.84

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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.