Home / 7,619.92-11,428.72-2,942.15

Finding the Fourth Proportional to 7,619.92, 11,428.72 and 2,942.15

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Solution

The fourth proportional to 7,619.92, 11,428.72 and 2,942.15 is: 4,412.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.92 : 11,428.72 = 2,942.15 : x
  2. Step 2: Convert to fraction form
    7,619.92/11,428.72 = 2,942.15/x
  3. Step 3: Cross multiply
    7,619.92x = 11,428.72 × 2,942.15
  4. Step 4: Simplify right side
    7,619.92x = 33,624,944.05
  5. Step 5: Solve for x
    x = 33,624,944.05/7,619.92
  6. Step 6: Final answer
    x = 4,412.77

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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.