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Finding the Fourth Proportional to 2,628, 3,626.69 and 1,698.12

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Solution

The fourth proportional to 2,628, 3,626.69 and 1,698.12 is: 2,343.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628 : 3,626.69 = 1,698.12 : x
  2. Step 2: Convert to fraction form
    2,628/3,626.69 = 1,698.12/x
  3. Step 3: Cross multiply
    2,628x = 3,626.69 × 1,698.12
  4. Step 4: Simplify right side
    2,628x = 6,158,546.33
  5. Step 5: Solve for x
    x = 6,158,546.33/2,628
  6. Step 6: Final answer
    x = 2,343.43

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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.