Home / 11,861.74-17,786.58-3,961.45

Finding the Fourth Proportional to 11,861.74, 17,786.58 and 3,961.45

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Solution

The fourth proportional to 11,861.74, 17,786.58 and 3,961.45 is: 5,940.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.74 : 17,786.58 = 3,961.45 : x
  2. Step 2: Convert to fraction form
    11,861.74/17,786.58 = 3,961.45/x
  3. Step 3: Cross multiply
    11,861.74x = 17,786.58 × 3,961.45
  4. Step 4: Simplify right side
    11,861.74x = 70,460,647.34
  5. Step 5: Solve for x
    x = 70,460,647.34/11,861.74
  6. Step 6: Final answer
    x = 5,940.16

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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.