Home / 7,172.20-10,759.74-2,789.56

Finding the Fourth Proportional to 7,172.20, 10,759.74 and 2,789.56

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Solution

The fourth proportional to 7,172.20, 10,759.74 and 2,789.56 is: 4,184.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.20 : 10,759.74 = 2,789.56 : x
  2. Step 2: Convert to fraction form
    7,172.20/10,759.74 = 2,789.56/x
  3. Step 3: Cross multiply
    7,172.20x = 10,759.74 × 2,789.56
  4. Step 4: Simplify right side
    7,172.20x = 30,014,940.31
  5. Step 5: Solve for x
    x = 30,014,940.31/7,172.20
  6. Step 6: Final answer
    x = 4,184.90

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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.