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Finding the Fourth Proportional to 2,183.90, 3,274.59 and 722.66

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Solution

The fourth proportional to 2,183.90, 3,274.59 and 722.66 is: 1,083.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.90 : 3,274.59 = 722.66 : x
  2. Step 2: Convert to fraction form
    2,183.90/3,274.59 = 722.66/x
  3. Step 3: Cross multiply
    2,183.90x = 3,274.59 × 722.66
  4. Step 4: Simplify right side
    2,183.90x = 2,366,415.21
  5. Step 5: Solve for x
    x = 2,366,415.21/2,183.90
  6. Step 6: Final answer
    x = 1,083.57

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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.