Home / 2,188.92-3,268.95-1,947

Finding the Fourth Proportional to 2,188.92, 3,268.95 and 1,947

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Solution

The fourth proportional to 2,188.92, 3,268.95 and 1,947 is: 2,907.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.92 : 3,268.95 = 1,947 : x
  2. Step 2: Convert to fraction form
    2,188.92/3,268.95 = 1,947/x
  3. Step 3: Cross multiply
    2,188.92x = 3,268.95 × 1,947
  4. Step 4: Simplify right side
    2,188.92x = 6,364,645.65
  5. Step 5: Solve for x
    x = 6,364,645.65/2,188.92
  6. Step 6: Final answer
    x = 2,907.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.