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Finding the Fourth Proportional to 3,888.82, 5,369.93 and 3,334.78

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Solution

The fourth proportional to 3,888.82, 5,369.93 and 3,334.78 is: 4,604.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.82 : 5,369.93 = 3,334.78 : x
  2. Step 2: Convert to fraction form
    3,888.82/5,369.93 = 3,334.78/x
  3. Step 3: Cross multiply
    3,888.82x = 5,369.93 × 3,334.78
  4. Step 4: Simplify right side
    3,888.82x = 17,907,535.17
  5. Step 5: Solve for x
    x = 17,907,535.17/3,888.82
  6. Step 6: Final answer
    x = 4,604.88

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1.5x scale

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.