Home / 1,947.48-2,687.30-1,161.36

Finding the Fourth Proportional to 1,947.48, 2,687.30 and 1,161.36

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Solution

The fourth proportional to 1,947.48, 2,687.30 and 1,161.36 is: 1,602.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.48 : 2,687.30 = 1,161.36 : x
  2. Step 2: Convert to fraction form
    1,947.48/2,687.30 = 1,161.36/x
  3. Step 3: Cross multiply
    1,947.48x = 2,687.30 × 1,161.36
  4. Step 4: Simplify right side
    1,947.48x = 3,120,922.73
  5. Step 5: Solve for x
    x = 3,120,922.73/1,947.48
  6. Step 6: Final answer
    x = 1,602.54

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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.