Home / 1,947.80-2,687.99-1,063.64

Finding the Fourth Proportional to 1,947.80, 2,687.99 and 1,063.64

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Solution

The fourth proportional to 1,947.80, 2,687.99 and 1,063.64 is: 1,467.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.80 : 2,687.99 = 1,063.64 : x
  2. Step 2: Convert to fraction form
    1,947.80/2,687.99 = 1,063.64/x
  3. Step 3: Cross multiply
    1,947.80x = 2,687.99 × 1,063.64
  4. Step 4: Simplify right side
    1,947.80x = 2,859,055.09
  5. Step 5: Solve for x
    x = 2,859,055.09/1,947.80
  6. Step 6: Final answer
    x = 1,467.84

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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.