Home / 1,645.48-2,270.82-1,086.44

Finding the Fourth Proportional to 1,645.48, 2,270.82 and 1,086.44

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Solution

The fourth proportional to 1,645.48, 2,270.82 and 1,086.44 is: 1,499.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.48 : 2,270.82 = 1,086.44 : x
  2. Step 2: Convert to fraction form
    1,645.48/2,270.82 = 1,086.44/x
  3. Step 3: Cross multiply
    1,645.48x = 2,270.82 × 1,086.44
  4. Step 4: Simplify right side
    1,645.48x = 2,467,109.68
  5. Step 5: Solve for x
    x = 2,467,109.68/1,645.48
  6. Step 6: Final answer
    x = 1,499.33

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1.5x scale

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.