Home / 3,889.84-5,831.52-1,939.36

Finding the Fourth Proportional to 3,889.84, 5,831.52 and 1,939.36

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Solution

The fourth proportional to 3,889.84, 5,831.52 and 1,939.36 is: 2,907.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.84 : 5,831.52 = 1,939.36 : x
  2. Step 2: Convert to fraction form
    3,889.84/5,831.52 = 1,939.36/x
  3. Step 3: Cross multiply
    3,889.84x = 5,831.52 × 1,939.36
  4. Step 4: Simplify right side
    3,889.84x = 11,309,416.63
  5. Step 5: Solve for x
    x = 11,309,416.63/3,889.84
  6. Step 6: Final answer
    x = 2,907.42

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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.