Home / 1,965.88-2,942.36-1,270.78

Finding the Fourth Proportional to 1,965.88, 2,942.36 and 1,270.78

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Solution

The fourth proportional to 1,965.88, 2,942.36 and 1,270.78 is: 1,901.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.88 : 2,942.36 = 1,270.78 : x
  2. Step 2: Convert to fraction form
    1,965.88/2,942.36 = 1,270.78/x
  3. Step 3: Cross multiply
    1,965.88x = 2,942.36 × 1,270.78
  4. Step 4: Simplify right side
    1,965.88x = 3,739,092.24
  5. Step 5: Solve for x
    x = 3,739,092.24/1,965.88
  6. Step 6: Final answer
    x = 1,901.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.