Home / 2,629.78-3,629.37-2,002.12

Finding the Fourth Proportional to 2,629.78, 3,629.37 and 2,002.12

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Solution

The fourth proportional to 2,629.78, 3,629.37 and 2,002.12 is: 2,763.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.78 : 3,629.37 = 2,002.12 : x
  2. Step 2: Convert to fraction form
    2,629.78/3,629.37 = 2,002.12/x
  3. Step 3: Cross multiply
    2,629.78x = 3,629.37 × 2,002.12
  4. Step 4: Simplify right side
    2,629.78x = 7,266,434.26
  5. Step 5: Solve for x
    x = 7,266,434.26/2,629.78
  6. Step 6: Final answer
    x = 2,763.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.