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Finding the Fourth Proportional to 2,222.78, 3,334.53 and 683.78

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Solution

The fourth proportional to 2,222.78, 3,334.53 and 683.78 is: 1,025.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,222.78 : 3,334.53 = 683.78 : x
  2. Step 2: Convert to fraction form
    2,222.78/3,334.53 = 683.78/x
  3. Step 3: Cross multiply
    2,222.78x = 3,334.53 × 683.78
  4. Step 4: Simplify right side
    2,222.78x = 2,280,084.92
  5. Step 5: Solve for x
    x = 2,280,084.92/2,222.78
  6. Step 6: Final answer
    x = 1,025.78

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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.