Home / 2,189.54-3,284.58-890.84

Finding the Fourth Proportional to 2,189.54, 3,284.58 and 890.84

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Solution

The fourth proportional to 2,189.54, 3,284.58 and 890.84 is: 1,336.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.54 : 3,284.58 = 890.84 : x
  2. Step 2: Convert to fraction form
    2,189.54/3,284.58 = 890.84/x
  3. Step 3: Cross multiply
    2,189.54x = 3,284.58 × 890.84
  4. Step 4: Simplify right side
    2,189.54x = 2,926,035.25
  5. Step 5: Solve for x
    x = 2,926,035.25/2,189.54
  6. Step 6: Final answer
    x = 1,336.37

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Double scale
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Similar ratio
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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.