Home / 7,813.44-11,721.51-3,431.34

Finding the Fourth Proportional to 7,813.44, 11,721.51 and 3,431.34

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Solution

The fourth proportional to 7,813.44, 11,721.51 and 3,431.34 is: 5,147.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.44 : 11,721.51 = 3,431.34 : x
  2. Step 2: Convert to fraction form
    7,813.44/11,721.51 = 3,431.34/x
  3. Step 3: Cross multiply
    7,813.44x = 11,721.51 × 3,431.34
  4. Step 4: Simplify right side
    7,813.44x = 40,220,486.12
  5. Step 5: Solve for x
    x = 40,220,486.12/7,813.44
  6. Step 6: Final answer
    x = 5,147.60

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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.