Home / 7,619.54-11,429.81-2,939.60

Finding the Fourth Proportional to 7,619.54, 11,429.81 and 2,939.60

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Solution

The fourth proportional to 7,619.54, 11,429.81 and 2,939.60 is: 4,409.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.54 : 11,429.81 = 2,939.60 : x
  2. Step 2: Convert to fraction form
    7,619.54/11,429.81 = 2,939.60/x
  3. Step 3: Cross multiply
    7,619.54x = 11,429.81 × 2,939.60
  4. Step 4: Simplify right side
    7,619.54x = 33,599,019.68
  5. Step 5: Solve for x
    x = 33,599,019.68/7,619.54
  6. Step 6: Final answer
    x = 4,409.59

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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.