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Finding the Fourth Proportional to 2,672.86, 4,010.09 and 1,211.62

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Solution

The fourth proportional to 2,672.86, 4,010.09 and 1,211.62 is: 1,817.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.86 : 4,010.09 = 1,211.62 : x
  2. Step 2: Convert to fraction form
    2,672.86/4,010.09 = 1,211.62/x
  3. Step 3: Cross multiply
    2,672.86x = 4,010.09 × 1,211.62
  4. Step 4: Simplify right side
    2,672.86x = 4,858,688.22
  5. Step 5: Solve for x
    x = 4,858,688.22/2,672.86
  6. Step 6: Final answer
    x = 1,817.79

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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.