Home / 3,897.62-5,379.03-2,219.06

Finding the Fourth Proportional to 3,897.62, 5,379.03 and 2,219.06

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Solution

The fourth proportional to 3,897.62, 5,379.03 and 2,219.06 is: 3,062.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,897.62 : 5,379.03 = 2,219.06 : x
  2. Step 2: Convert to fraction form
    3,897.62/5,379.03 = 2,219.06/x
  3. Step 3: Cross multiply
    3,897.62x = 5,379.03 × 2,219.06
  4. Step 4: Simplify right side
    3,897.62x = 11,936,390.31
  5. Step 5: Solve for x
    x = 11,936,390.31/3,897.62
  6. Step 6: Final answer
    x = 3,062.48

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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.