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Finding the Fourth Proportional to 10,917.78, 16,376.67 and 2,709.78

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Solution

The fourth proportional to 10,917.78, 16,376.67 and 2,709.78 is: 4,064.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,917.78 : 16,376.67 = 2,709.78 : x
  2. Step 2: Convert to fraction form
    10,917.78/16,376.67 = 2,709.78/x
  3. Step 3: Cross multiply
    10,917.78x = 16,376.67 × 2,709.78
  4. Step 4: Simplify right side
    10,917.78x = 44,377,172.83
  5. Step 5: Solve for x
    x = 44,377,172.83/10,917.78
  6. Step 6: Final answer
    x = 4,064.67

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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.