Home / 2,629-3,939.96-1,395.10

Finding the Fourth Proportional to 2,629, 3,939.96 and 1,395.10

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Solution

The fourth proportional to 2,629, 3,939.96 and 1,395.10 is: 2,090.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629 : 3,939.96 = 1,395.10 : x
  2. Step 2: Convert to fraction form
    2,629/3,939.96 = 1,395.10/x
  3. Step 3: Cross multiply
    2,629x = 3,939.96 × 1,395.10
  4. Step 4: Simplify right side
    2,629x = 5,496,638.20
  5. Step 5: Solve for x
    x = 5,496,638.20/2,629
  6. Step 6: Final answer
    x = 2,090.77

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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.