Home / 2,121.67-3,183.87-1,148.44

Finding the Fourth Proportional to 2,121.67, 3,183.87 and 1,148.44

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Solution

The fourth proportional to 2,121.67, 3,183.87 and 1,148.44 is: 1,723.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.67 : 3,183.87 = 1,148.44 : x
  2. Step 2: Convert to fraction form
    2,121.67/3,183.87 = 1,148.44/x
  3. Step 3: Cross multiply
    2,121.67x = 3,183.87 × 1,148.44
  4. Step 4: Simplify right side
    2,121.67x = 3,656,483.66
  5. Step 5: Solve for x
    x = 3,656,483.66/2,121.67
  6. Step 6: Final answer
    x = 1,723.40

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1.5x scale

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.