Home / 2,629.64-3,941.80-1,705.78

Finding the Fourth Proportional to 2,629.64, 3,941.80 and 1,705.78

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Solution

The fourth proportional to 2,629.64, 3,941.80 and 1,705.78 is: 2,556.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.64 : 3,941.80 = 1,705.78 : x
  2. Step 2: Convert to fraction form
    2,629.64/3,941.80 = 1,705.78/x
  3. Step 3: Cross multiply
    2,629.64x = 3,941.80 × 1,705.78
  4. Step 4: Simplify right side
    2,629.64x = 6,723,843.60
  5. Step 5: Solve for x
    x = 6,723,843.60/2,629.64
  6. Step 6: Final answer
    x = 2,556.94

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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.