Home / 2,629.80-3,943.54-1,396.92

Finding the Fourth Proportional to 2,629.80, 3,943.54 and 1,396.92

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Solution

The fourth proportional to 2,629.80, 3,943.54 and 1,396.92 is: 2,094.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.80 : 3,943.54 = 1,396.92 : x
  2. Step 2: Convert to fraction form
    2,629.80/3,943.54 = 1,396.92/x
  3. Step 3: Cross multiply
    2,629.80x = 3,943.54 × 1,396.92
  4. Step 4: Simplify right side
    2,629.80x = 5,508,809.90
  5. Step 5: Solve for x
    x = 5,508,809.90/2,629.80
  6. Step 6: Final answer
    x = 2,094.76

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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.