Home / 2,686.20-4,028.99-1,298.37

Finding the Fourth Proportional to 2,686.20, 4,028.99 and 1,298.37

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Solution

The fourth proportional to 2,686.20, 4,028.99 and 1,298.37 is: 1,947.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.20 : 4,028.99 = 1,298.37 : x
  2. Step 2: Convert to fraction form
    2,686.20/4,028.99 = 1,298.37/x
  3. Step 3: Cross multiply
    2,686.20x = 4,028.99 × 1,298.37
  4. Step 4: Simplify right side
    2,686.20x = 5,231,119.75
  5. Step 5: Solve for x
    x = 5,231,119.75/2,686.20
  6. Step 6: Final answer
    x = 1,947.41

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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.