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Finding the Fourth Proportional to 2,716.88, 4,071.06 and 1,983.08

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Solution

The fourth proportional to 2,716.88, 4,071.06 and 1,983.08 is: 2,971.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,716.88 : 4,071.06 = 1,983.08 : x
  2. Step 2: Convert to fraction form
    2,716.88/4,071.06 = 1,983.08/x
  3. Step 3: Cross multiply
    2,716.88x = 4,071.06 × 1,983.08
  4. Step 4: Simplify right side
    2,716.88x = 8,073,237.66
  5. Step 5: Solve for x
    x = 8,073,237.66/2,716.88
  6. Step 6: Final answer
    x = 2,971.51

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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.