Home / 2,185.14-3,278.07-1,089.54

Finding the Fourth Proportional to 2,185.14, 3,278.07 and 1,089.54

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Solution

The fourth proportional to 2,185.14, 3,278.07 and 1,089.54 is: 1,634.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.14 : 3,278.07 = 1,089.54 : x
  2. Step 2: Convert to fraction form
    2,185.14/3,278.07 = 1,089.54/x
  3. Step 3: Cross multiply
    2,185.14x = 3,278.07 × 1,089.54
  4. Step 4: Simplify right side
    2,185.14x = 3,571,588.39
  5. Step 5: Solve for x
    x = 3,571,588.39/2,185.14
  6. Step 6: Final answer
    x = 1,634.49

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Half scale
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Double scale
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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.