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Finding the Fourth Proportional to 3,678.78, 5,074.04 and 2,334.79

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Solution

The fourth proportional to 3,678.78, 5,074.04 and 2,334.79 is: 3,220.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.78 : 5,074.04 = 2,334.79 : x
  2. Step 2: Convert to fraction form
    3,678.78/5,074.04 = 2,334.79/x
  3. Step 3: Cross multiply
    3,678.78x = 5,074.04 × 2,334.79
  4. Step 4: Simplify right side
    3,678.78x = 11,846,830.03
  5. Step 5: Solve for x
    x = 11,846,830.03/3,678.78
  6. Step 6: Final answer
    x = 3,220.31

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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.