Home / 3,678.45-5,074.53-2,105.64

Finding the Fourth Proportional to 3,678.45, 5,074.53 and 2,105.64

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Solution

The fourth proportional to 3,678.45, 5,074.53 and 2,105.64 is: 2,904.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.45 : 5,074.53 = 2,105.64 : x
  2. Step 2: Convert to fraction form
    3,678.45/5,074.53 = 2,105.64/x
  3. Step 3: Cross multiply
    3,678.45x = 5,074.53 × 2,105.64
  4. Step 4: Simplify right side
    3,678.45x = 10,685,133.35
  5. Step 5: Solve for x
    x = 10,685,133.35/3,678.45
  6. Step 6: Final answer
    x = 2,904.79

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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.