Home / 2,138.82-3,208.80-1,701.72

Finding the Fourth Proportional to 2,138.82, 3,208.80 and 1,701.72

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Solution

The fourth proportional to 2,138.82, 3,208.80 and 1,701.72 is: 2,553.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.82 : 3,208.80 = 1,701.72 : x
  2. Step 2: Convert to fraction form
    2,138.82/3,208.80 = 1,701.72/x
  3. Step 3: Cross multiply
    2,138.82x = 3,208.80 × 1,701.72
  4. Step 4: Simplify right side
    2,138.82x = 5,460,479.14
  5. Step 5: Solve for x
    x = 5,460,479.14/2,138.82
  6. Step 6: Final answer
    x = 2,553.03

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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.