Home / 3,889.61-5,367.31-2,188.01

Finding the Fourth Proportional to 3,889.61, 5,367.31 and 2,188.01

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Solution

The fourth proportional to 3,889.61, 5,367.31 and 2,188.01 is: 3,019.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.61 : 5,367.31 = 2,188.01 : x
  2. Step 2: Convert to fraction form
    3,889.61/5,367.31 = 2,188.01/x
  3. Step 3: Cross multiply
    3,889.61x = 5,367.31 × 2,188.01
  4. Step 4: Simplify right side
    3,889.61x = 11,743,727.95
  5. Step 5: Solve for x
    x = 11,743,727.95/3,889.61
  6. Step 6: Final answer
    x = 3,019.26

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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.