Home / 2,765.19-4,148.94-1,121.31

Finding the Fourth Proportional to 2,765.19, 4,148.94 and 1,121.31

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Solution

The fourth proportional to 2,765.19, 4,148.94 and 1,121.31 is: 1,682.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.19 : 4,148.94 = 1,121.31 : x
  2. Step 2: Convert to fraction form
    2,765.19/4,148.94 = 1,121.31/x
  3. Step 3: Cross multiply
    2,765.19x = 4,148.94 × 1,121.31
  4. Step 4: Simplify right side
    2,765.19x = 4,652,247.91
  5. Step 5: Solve for x
    x = 4,652,247.91/2,765.19
  6. Step 6: Final answer
    x = 1,682.43

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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.