Home / 7,121.72-10,675.29-2,742.26

Finding the Fourth Proportional to 7,121.72, 10,675.29 and 2,742.26

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Solution

The fourth proportional to 7,121.72, 10,675.29 and 2,742.26 is: 4,110.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.72 : 10,675.29 = 2,742.26 : x
  2. Step 2: Convert to fraction form
    7,121.72/10,675.29 = 2,742.26/x
  3. Step 3: Cross multiply
    7,121.72x = 10,675.29 × 2,742.26
  4. Step 4: Simplify right side
    7,121.72x = 29,274,377.66
  5. Step 5: Solve for x
    x = 29,274,377.66/7,121.72
  6. Step 6: Final answer
    x = 4,110.58

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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.