Home / 7,721.82-11,567.22-3,556.05

Finding the Fourth Proportional to 7,721.82, 11,567.22 and 3,556.05

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Solution

The fourth proportional to 7,721.82, 11,567.22 and 3,556.05 is: 5,326.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.82 : 11,567.22 = 3,556.05 : x
  2. Step 2: Convert to fraction form
    7,721.82/11,567.22 = 3,556.05/x
  3. Step 3: Cross multiply
    7,721.82x = 11,567.22 × 3,556.05
  4. Step 4: Simplify right side
    7,721.82x = 41,133,612.68
  5. Step 5: Solve for x
    x = 41,133,612.68/7,721.82
  6. Step 6: Final answer
    x = 5,326.93

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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.