Home / 7,821.60-11,736.96-2,894.68

Finding the Fourth Proportional to 7,821.60, 11,736.96 and 2,894.68

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Solution

The fourth proportional to 7,821.60, 11,736.96 and 2,894.68 is: 4,343.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.60 : 11,736.96 = 2,894.68 : x
  2. Step 2: Convert to fraction form
    7,821.60/11,736.96 = 2,894.68/x
  3. Step 3: Cross multiply
    7,821.60x = 11,736.96 × 2,894.68
  4. Step 4: Simplify right side
    7,821.60x = 33,974,743.37
  5. Step 5: Solve for x
    x = 33,974,743.37/7,821.60
  6. Step 6: Final answer
    x = 4,343.71

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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.