Home / 1,947.58-2,687.81-1,108.54

Finding the Fourth Proportional to 1,947.58, 2,687.81 and 1,108.54

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Solution

The fourth proportional to 1,947.58, 2,687.81 and 1,108.54 is: 1,529.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.58 : 2,687.81 = 1,108.54 : x
  2. Step 2: Convert to fraction form
    1,947.58/2,687.81 = 1,108.54/x
  3. Step 3: Cross multiply
    1,947.58x = 2,687.81 × 1,108.54
  4. Step 4: Simplify right side
    1,947.58x = 2,979,531.46
  5. Step 5: Solve for x
    x = 2,979,531.46/1,947.58
  6. Step 6: Final answer
    x = 1,529.87

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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.