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Finding the Fourth Proportional to 2,053.89, 3,080.75 and 820.97

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Solution

The fourth proportional to 2,053.89, 3,080.75 and 820.97 is: 1,231.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,053.89 : 3,080.75 = 820.97 : x
  2. Step 2: Convert to fraction form
    2,053.89/3,080.75 = 820.97/x
  3. Step 3: Cross multiply
    2,053.89x = 3,080.75 × 820.97
  4. Step 4: Simplify right side
    2,053.89x = 2,529,203.33
  5. Step 5: Solve for x
    x = 2,529,203.33/2,053.89
  6. Step 6: Final answer
    x = 1,231.42

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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.