Home / 7,778.89-11,668.70-3,396.25

Finding the Fourth Proportional to 7,778.89, 11,668.70 and 3,396.25

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Solution

The fourth proportional to 7,778.89, 11,668.70 and 3,396.25 is: 5,094.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.89 : 11,668.70 = 3,396.25 : x
  2. Step 2: Convert to fraction form
    7,778.89/11,668.70 = 3,396.25/x
  3. Step 3: Cross multiply
    7,778.89x = 11,668.70 × 3,396.25
  4. Step 4: Simplify right side
    7,778.89x = 39,629,822.38
  5. Step 5: Solve for x
    x = 39,629,822.38/7,778.89
  6. Step 6: Final answer
    x = 5,094.53

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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.