Home / 2,629.85-3,941.79-1,328.57

Finding the Fourth Proportional to 2,629.85, 3,941.79 and 1,328.57

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Solution

The fourth proportional to 2,629.85, 3,941.79 and 1,328.57 is: 1,991.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.85 : 3,941.79 = 1,328.57 : x
  2. Step 2: Convert to fraction form
    2,629.85/3,941.79 = 1,328.57/x
  3. Step 3: Cross multiply
    2,629.85x = 3,941.79 × 1,328.57
  4. Step 4: Simplify right side
    2,629.85x = 5,236,943.94
  5. Step 5: Solve for x
    x = 5,236,943.94/2,629.85
  6. Step 6: Final answer
    x = 1,991.35

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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.