Home / 1,947.42-2,687.41-1,201.08

Finding the Fourth Proportional to 1,947.42, 2,687.41 and 1,201.08

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Solution

The fourth proportional to 1,947.42, 2,687.41 and 1,201.08 is: 1,657.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.42 : 2,687.41 = 1,201.08 : x
  2. Step 2: Convert to fraction form
    1,947.42/2,687.41 = 1,201.08/x
  3. Step 3: Cross multiply
    1,947.42x = 2,687.41 × 1,201.08
  4. Step 4: Simplify right side
    1,947.42x = 3,227,780.97
  5. Step 5: Solve for x
    x = 3,227,780.97/1,947.42
  6. Step 6: Final answer
    x = 1,657.47

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Why These Related Problems?

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