Home / 11,977.55-17,964.95-3,211.79

Finding the Fourth Proportional to 11,977.55, 17,964.95 and 3,211.79

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Solution

The fourth proportional to 11,977.55, 17,964.95 and 3,211.79 is: 4,817.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,977.55 : 17,964.95 = 3,211.79 : x
  2. Step 2: Convert to fraction form
    11,977.55/17,964.95 = 3,211.79/x
  3. Step 3: Cross multiply
    11,977.55x = 17,964.95 × 3,211.79
  4. Step 4: Simplify right side
    11,977.55x = 57,699,564.97
  5. Step 5: Solve for x
    x = 57,699,564.97/11,977.55
  6. Step 6: Final answer
    x = 4,817.31

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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.