Home / 4,942.30-7,406.70-3,181.90

Finding the Fourth Proportional to 4,942.30, 7,406.70 and 3,181.90

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Solution

The fourth proportional to 4,942.30, 7,406.70 and 3,181.90 is: 4,768.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,942.30 : 7,406.70 = 3,181.90 : x
  2. Step 2: Convert to fraction form
    4,942.30/7,406.70 = 3,181.90/x
  3. Step 3: Cross multiply
    4,942.30x = 7,406.70 × 3,181.90
  4. Step 4: Simplify right side
    4,942.30x = 23,567,378.73
  5. Step 5: Solve for x
    x = 23,567,378.73/4,942.30
  6. Step 6: Final answer
    x = 4,768.50

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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.