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Finding the Fourth Proportional to 1,874.81, 2,808.97 and 1,489.25

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Solution

The fourth proportional to 1,874.81, 2,808.97 and 1,489.25 is: 2,231.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,874.81 : 2,808.97 = 1,489.25 : x
  2. Step 2: Convert to fraction form
    1,874.81/2,808.97 = 1,489.25/x
  3. Step 3: Cross multiply
    1,874.81x = 2,808.97 × 1,489.25
  4. Step 4: Simplify right side
    1,874.81x = 4,183,258.57
  5. Step 5: Solve for x
    x = 4,183,258.57/1,874.81
  6. Step 6: Final answer
    x = 2,231.30

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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.