Home / 3,738.80-5,608.35-1,398.57

Finding the Fourth Proportional to 3,738.80, 5,608.35 and 1,398.57

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Solution

The fourth proportional to 3,738.80, 5,608.35 and 1,398.57 is: 2,097.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,738.80 : 5,608.35 = 1,398.57 : x
  2. Step 2: Convert to fraction form
    3,738.80/5,608.35 = 1,398.57/x
  3. Step 3: Cross multiply
    3,738.80x = 5,608.35 × 1,398.57
  4. Step 4: Simplify right side
    3,738.80x = 7,843,670.06
  5. Step 5: Solve for x
    x = 7,843,670.06/3,738.80
  6. Step 6: Final answer
    x = 2,097.91

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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.