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Finding the Fourth Proportional to 2,714.82, 4,072.23 and 961.11

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Solution

The fourth proportional to 2,714.82, 4,072.23 and 961.11 is: 1,441.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,714.82 : 4,072.23 = 961.11 : x
  2. Step 2: Convert to fraction form
    2,714.82/4,072.23 = 961.11/x
  3. Step 3: Cross multiply
    2,714.82x = 4,072.23 × 961.11
  4. Step 4: Simplify right side
    2,714.82x = 3,913,860.98
  5. Step 5: Solve for x
    x = 3,913,860.98/2,714.82
  6. Step 6: Final answer
    x = 1,441.67

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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.