Home / 1,947.90-2,919.33-1,299.18

Finding the Fourth Proportional to 1,947.90, 2,919.33 and 1,299.18

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Solution

The fourth proportional to 1,947.90, 2,919.33 and 1,299.18 is: 1,947.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.90 : 2,919.33 = 1,299.18 : x
  2. Step 2: Convert to fraction form
    1,947.90/2,919.33 = 1,299.18/x
  3. Step 3: Cross multiply
    1,947.90x = 2,919.33 × 1,299.18
  4. Step 4: Simplify right side
    1,947.90x = 3,792,735.15
  5. Step 5: Solve for x
    x = 3,792,735.15/1,947.90
  6. Step 6: Final answer
    x = 1,947.09

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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.