Home / 7,778.47-11,669.44-2,231.39

Finding the Fourth Proportional to 7,778.47, 11,669.44 and 2,231.39

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Solution

The fourth proportional to 7,778.47, 11,669.44 and 2,231.39 is: 3,347.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.47 : 11,669.44 = 2,231.39 : x
  2. Step 2: Convert to fraction form
    7,778.47/11,669.44 = 2,231.39/x
  3. Step 3: Cross multiply
    7,778.47x = 11,669.44 × 2,231.39
  4. Step 4: Simplify right side
    7,778.47x = 26,039,063.54
  5. Step 5: Solve for x
    x = 26,039,063.54/7,778.47
  6. Step 6: Final answer
    x = 3,347.58

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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.