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Finding the Fourth Proportional to 1,949.74, 2,918.13 and 1,384.02

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Solution

The fourth proportional to 1,949.74, 2,918.13 and 1,384.02 is: 2,071.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.74 : 2,918.13 = 1,384.02 : x
  2. Step 2: Convert to fraction form
    1,949.74/2,918.13 = 1,384.02/x
  3. Step 3: Cross multiply
    1,949.74x = 2,918.13 × 1,384.02
  4. Step 4: Simplify right side
    1,949.74x = 4,038,745.09
  5. Step 5: Solve for x
    x = 4,038,745.09/1,949.74
  6. Step 6: Final answer
    x = 2,071.43

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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.