Home / 3,018.21-4,161.75-1,897.79

Finding the Fourth Proportional to 3,018.21, 4,161.75 and 1,897.79

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Solution

The fourth proportional to 3,018.21, 4,161.75 and 1,897.79 is: 2,616.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018.21 : 4,161.75 = 1,897.79 : x
  2. Step 2: Convert to fraction form
    3,018.21/4,161.75 = 1,897.79/x
  3. Step 3: Cross multiply
    3,018.21x = 4,161.75 × 1,897.79
  4. Step 4: Simplify right side
    3,018.21x = 7,898,106.72
  5. Step 5: Solve for x
    x = 7,898,106.72/3,018.21
  6. Step 6: Final answer
    x = 2,616.82

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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.