Home / 2,072.18-3,108.21-611.36

Finding the Fourth Proportional to 2,072.18, 3,108.21 and 611.36

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Solution

The fourth proportional to 2,072.18, 3,108.21 and 611.36 is: 917.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.18 : 3,108.21 = 611.36 : x
  2. Step 2: Convert to fraction form
    2,072.18/3,108.21 = 611.36/x
  3. Step 3: Cross multiply
    2,072.18x = 3,108.21 × 611.36
  4. Step 4: Simplify right side
    2,072.18x = 1,900,235.27
  5. Step 5: Solve for x
    x = 1,900,235.27/2,072.18
  6. Step 6: Final answer
    x = 917.02

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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.