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Finding the Fourth Proportional to 1,940.71, 2,675.06 and 1,311.04

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Solution

The fourth proportional to 1,940.71, 2,675.06 and 1,311.04 is: 1,807.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.71 : 2,675.06 = 1,311.04 : x
  2. Step 2: Convert to fraction form
    1,940.71/2,675.06 = 1,311.04/x
  3. Step 3: Cross multiply
    1,940.71x = 2,675.06 × 1,311.04
  4. Step 4: Simplify right side
    1,940.71x = 3,507,097.42
  5. Step 5: Solve for x
    x = 3,507,097.42/1,940.71
  6. Step 6: Final answer
    x = 1,807.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.