Home / 2,107.36-3,161.45-808.73

Finding the Fourth Proportional to 2,107.36, 3,161.45 and 808.73

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Solution

The fourth proportional to 2,107.36, 3,161.45 and 808.73 is: 1,213.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.36 : 3,161.45 = 808.73 : x
  2. Step 2: Convert to fraction form
    2,107.36/3,161.45 = 808.73/x
  3. Step 3: Cross multiply
    2,107.36x = 3,161.45 × 808.73
  4. Step 4: Simplify right side
    2,107.36x = 2,556,747.51
  5. Step 5: Solve for x
    x = 2,556,747.51/2,107.36
  6. Step 6: Final answer
    x = 1,213.25

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1.5x scale

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.