Home / 2,629.15-3,945.68-1,242.91

Finding the Fourth Proportional to 2,629.15, 3,945.68 and 1,242.91

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Solution

The fourth proportional to 2,629.15, 3,945.68 and 1,242.91 is: 1,865.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.15 : 3,945.68 = 1,242.91 : x
  2. Step 2: Convert to fraction form
    2,629.15/3,945.68 = 1,242.91/x
  3. Step 3: Cross multiply
    2,629.15x = 3,945.68 × 1,242.91
  4. Step 4: Simplify right side
    2,629.15x = 4,904,125.13
  5. Step 5: Solve for x
    x = 4,904,125.13/2,629.15
  6. Step 6: Final answer
    x = 1,865.29

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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.