Home / 7,631.73-11,450.40-3,189.87

Finding the Fourth Proportional to 7,631.73, 11,450.40 and 3,189.87

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Solution

The fourth proportional to 7,631.73, 11,450.40 and 3,189.87 is: 4,785.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,631.73 : 11,450.40 = 3,189.87 : x
  2. Step 2: Convert to fraction form
    7,631.73/11,450.40 = 3,189.87/x
  3. Step 3: Cross multiply
    7,631.73x = 11,450.40 × 3,189.87
  4. Step 4: Simplify right side
    7,631.73x = 36,525,287.45
  5. Step 5: Solve for x
    x = 36,525,287.45/7,631.73
  6. Step 6: Final answer
    x = 4,785.98

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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.