Home / 1,761.82-2,429.09-1,289.32

Finding the Fourth Proportional to 1,761.82, 2,429.09 and 1,289.32

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Solution

The fourth proportional to 1,761.82, 2,429.09 and 1,289.32 is: 1,777.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.82 : 2,429.09 = 1,289.32 : x
  2. Step 2: Convert to fraction form
    1,761.82/2,429.09 = 1,289.32/x
  3. Step 3: Cross multiply
    1,761.82x = 2,429.09 × 1,289.32
  4. Step 4: Simplify right side
    1,761.82x = 3,131,866.63
  5. Step 5: Solve for x
    x = 3,131,866.63/1,761.82
  6. Step 6: Final answer
    x = 1,777.63

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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.