Home / 2,765.10-4,147.56-1,121.22

Finding the Fourth Proportional to 2,765.10, 4,147.56 and 1,121.22

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Solution

The fourth proportional to 2,765.10, 4,147.56 and 1,121.22 is: 1,681.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.10 : 4,147.56 = 1,121.22 : x
  2. Step 2: Convert to fraction form
    2,765.10/4,147.56 = 1,121.22/x
  3. Step 3: Cross multiply
    2,765.10x = 4,147.56 × 1,121.22
  4. Step 4: Simplify right side
    2,765.10x = 4,650,327.22
  5. Step 5: Solve for x
    x = 4,650,327.22/2,765.10
  6. Step 6: Final answer
    x = 1,681.79

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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.