Home / 2,782.14-4,173.20-1,138.69

Finding the Fourth Proportional to 2,782.14, 4,173.20 and 1,138.69

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Solution

The fourth proportional to 2,782.14, 4,173.20 and 1,138.69 is: 1,708.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.14 : 4,173.20 = 1,138.69 : x
  2. Step 2: Convert to fraction form
    2,782.14/4,173.20 = 1,138.69/x
  3. Step 3: Cross multiply
    2,782.14x = 4,173.20 × 1,138.69
  4. Step 4: Simplify right side
    2,782.14x = 4,751,964.09
  5. Step 5: Solve for x
    x = 4,751,964.09/2,782.14
  6. Step 6: Final answer
    x = 1,708.03

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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.