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Finding the Fourth Proportional to 1,294.74, 1,951.87 and 1,211.22

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Solution

The fourth proportional to 1,294.74, 1,951.87 and 1,211.22 is: 1,825.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294.74 : 1,951.87 = 1,211.22 : x
  2. Step 2: Convert to fraction form
    1,294.74/1,951.87 = 1,211.22/x
  3. Step 3: Cross multiply
    1,294.74x = 1,951.87 × 1,211.22
  4. Step 4: Simplify right side
    1,294.74x = 2,364,143.98
  5. Step 5: Solve for x
    x = 2,364,143.98/1,294.74
  6. Step 6: Final answer
    x = 1,825.96

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.