Home / 7,767.72-11,638.62-3,378.60

Finding the Fourth Proportional to 7,767.72, 11,638.62 and 3,378.60

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Solution

The fourth proportional to 7,767.72, 11,638.62 and 3,378.60 is: 5,062.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,767.72 : 11,638.62 = 3,378.60 : x
  2. Step 2: Convert to fraction form
    7,767.72/11,638.62 = 3,378.60/x
  3. Step 3: Cross multiply
    7,767.72x = 11,638.62 × 3,378.60
  4. Step 4: Simplify right side
    7,767.72x = 39,322,241.53
  5. Step 5: Solve for x
    x = 39,322,241.53/7,767.72
  6. Step 6: Final answer
    x = 5,062.26

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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.