Home / 2,694.70-4,039.43-1,288.75

Finding the Fourth Proportional to 2,694.70, 4,039.43 and 1,288.75

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Solution

The fourth proportional to 2,694.70, 4,039.43 and 1,288.75 is: 1,931.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,694.70 : 4,039.43 = 1,288.75 : x
  2. Step 2: Convert to fraction form
    2,694.70/4,039.43 = 1,288.75/x
  3. Step 3: Cross multiply
    2,694.70x = 4,039.43 × 1,288.75
  4. Step 4: Simplify right side
    2,694.70x = 5,205,825.51
  5. Step 5: Solve for x
    x = 5,205,825.51/2,694.70
  6. Step 6: Final answer
    x = 1,931.87

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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.