Home / 2,782.23-4,173.35-1,138.41

Finding the Fourth Proportional to 2,782.23, 4,173.35 and 1,138.41

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Solution

The fourth proportional to 2,782.23, 4,173.35 and 1,138.41 is: 1,707.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.23 : 4,173.35 = 1,138.41 : x
  2. Step 2: Convert to fraction form
    2,782.23/4,173.35 = 1,138.41/x
  3. Step 3: Cross multiply
    2,782.23x = 4,173.35 × 1,138.41
  4. Step 4: Simplify right side
    2,782.23x = 4,750,977.68
  5. Step 5: Solve for x
    x = 4,750,977.68/2,782.23
  6. Step 6: Final answer
    x = 1,707.62

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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.