Home / 7,788.26-11,684.81-2,790.68

Finding the Fourth Proportional to 7,788.26, 11,684.81 and 2,790.68

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Solution

The fourth proportional to 7,788.26, 11,684.81 and 2,790.68 is: 4,186.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788.26 : 11,684.81 = 2,790.68 : x
  2. Step 2: Convert to fraction form
    7,788.26/11,684.81 = 2,790.68/x
  3. Step 3: Cross multiply
    7,788.26x = 11,684.81 × 2,790.68
  4. Step 4: Simplify right side
    7,788.26x = 32,608,565.57
  5. Step 5: Solve for x
    x = 32,608,565.57/7,788.26
  6. Step 6: Final answer
    x = 4,186.89

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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.