Home / 7,173.12-10,757.60-2,789.60

Finding the Fourth Proportional to 7,173.12, 10,757.60 and 2,789.60

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Solution

The fourth proportional to 7,173.12, 10,757.60 and 2,789.60 is: 4,183.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173.12 : 10,757.60 = 2,789.60 : x
  2. Step 2: Convert to fraction form
    7,173.12/10,757.60 = 2,789.60/x
  3. Step 3: Cross multiply
    7,173.12x = 10,757.60 × 2,789.60
  4. Step 4: Simplify right side
    7,173.12x = 30,009,400.96
  5. Step 5: Solve for x
    x = 30,009,400.96/7,173.12
  6. Step 6: Final answer
    x = 4,183.59

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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.