Home / 3,172.14-4,377.75-2,108.07

Finding the Fourth Proportional to 3,172.14, 4,377.75 and 2,108.07

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Solution

The fourth proportional to 3,172.14, 4,377.75 and 2,108.07 is: 2,909.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.14 : 4,377.75 = 2,108.07 : x
  2. Step 2: Convert to fraction form
    3,172.14/4,377.75 = 2,108.07/x
  3. Step 3: Cross multiply
    3,172.14x = 4,377.75 × 2,108.07
  4. Step 4: Simplify right side
    3,172.14x = 9,228,603.44
  5. Step 5: Solve for x
    x = 9,228,603.44/3,172.14
  6. Step 6: Final answer
    x = 2,909.27

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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.