Home / 11,971.91-17,957.87-3,206.60

Finding the Fourth Proportional to 11,971.91, 17,957.87 and 3,206.60

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Solution

The fourth proportional to 11,971.91, 17,957.87 and 3,206.60 is: 4,809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,971.91 : 17,957.87 = 3,206.60 : x
  2. Step 2: Convert to fraction form
    11,971.91/17,957.87 = 3,206.60/x
  3. Step 3: Cross multiply
    11,971.91x = 17,957.87 × 3,206.60
  4. Step 4: Simplify right side
    11,971.91x = 57,583,705.94
  5. Step 5: Solve for x
    x = 57,583,705.94/11,971.91
  6. Step 6: Final answer
    x = 4,809.90

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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.