Home / 3,788.51-5,211.96-2,902.78

Finding the Fourth Proportional to 3,788.51, 5,211.96 and 2,902.78

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Solution

The fourth proportional to 3,788.51, 5,211.96 and 2,902.78 is: 3,993.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,788.51 : 5,211.96 = 2,902.78 : x
  2. Step 2: Convert to fraction form
    3,788.51/5,211.96 = 2,902.78/x
  3. Step 3: Cross multiply
    3,788.51x = 5,211.96 × 2,902.78
  4. Step 4: Simplify right side
    3,788.51x = 15,129,147.19
  5. Step 5: Solve for x
    x = 15,129,147.19/3,788.51
  6. Step 6: Final answer
    x = 3,993.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.