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Finding the Fourth Proportional to 1,976.75, 2,958.94 and 1,319.16

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Solution

The fourth proportional to 1,976.75, 2,958.94 and 1,319.16 is: 1,974.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976.75 : 2,958.94 = 1,319.16 : x
  2. Step 2: Convert to fraction form
    1,976.75/2,958.94 = 1,319.16/x
  3. Step 3: Cross multiply
    1,976.75x = 2,958.94 × 1,319.16
  4. Step 4: Simplify right side
    1,976.75x = 3,903,315.29
  5. Step 5: Solve for x
    x = 3,903,315.29/1,976.75
  6. Step 6: Final answer
    x = 1,974.61

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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.