Home / 2,765.07-4,147.58-1,121.23

Finding the Fourth Proportional to 2,765.07, 4,147.58 and 1,121.23

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Solution

The fourth proportional to 2,765.07, 4,147.58 and 1,121.23 is: 1,681.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.07 : 4,147.58 = 1,121.23 : x
  2. Step 2: Convert to fraction form
    2,765.07/4,147.58 = 1,121.23/x
  3. Step 3: Cross multiply
    2,765.07x = 4,147.58 × 1,121.23
  4. Step 4: Simplify right side
    2,765.07x = 4,650,364.78
  5. Step 5: Solve for x
    x = 4,650,364.78/2,765.07
  6. Step 6: Final answer
    x = 1,681.83

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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.