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Finding the Fourth Proportional to 2,571.77, 3,857.72 and 722.67

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Solution

The fourth proportional to 2,571.77, 3,857.72 and 722.67 is: 1,084.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,571.77 : 3,857.72 = 722.67 : x
  2. Step 2: Convert to fraction form
    2,571.77/3,857.72 = 722.67/x
  3. Step 3: Cross multiply
    2,571.77x = 3,857.72 × 722.67
  4. Step 4: Simplify right side
    2,571.77x = 2,787,854.90
  5. Step 5: Solve for x
    x = 2,787,854.90/2,571.77
  6. Step 6: Final answer
    x = 1,084.02

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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.