Home / 2,765.19-4,147.71-1,121.70

Finding the Fourth Proportional to 2,765.19, 4,147.71 and 1,121.70

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Solution

The fourth proportional to 2,765.19, 4,147.71 and 1,121.70 is: 1,682.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.19 : 4,147.71 = 1,121.70 : x
  2. Step 2: Convert to fraction form
    2,765.19/4,147.71 = 1,121.70/x
  3. Step 3: Cross multiply
    2,765.19x = 4,147.71 × 1,121.70
  4. Step 4: Simplify right side
    2,765.19x = 4,652,486.31
  5. Step 5: Solve for x
    x = 4,652,486.31/2,765.19
  6. Step 6: Final answer
    x = 1,682.52

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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.