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Finding the Fourth Proportional to 1,882.54, 2,817.97 and 1,389.51

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Solution

The fourth proportional to 1,882.54, 2,817.97 and 1,389.51 is: 2,079.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,882.54 : 2,817.97 = 1,389.51 : x
  2. Step 2: Convert to fraction form
    1,882.54/2,817.97 = 1,389.51/x
  3. Step 3: Cross multiply
    1,882.54x = 2,817.97 × 1,389.51
  4. Step 4: Simplify right side
    1,882.54x = 3,915,597.49
  5. Step 5: Solve for x
    x = 3,915,597.49/1,882.54
  6. Step 6: Final answer
    x = 2,079.95

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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.