Home / 3,945.80-5,917.47-1,348.13

Finding the Fourth Proportional to 3,945.80, 5,917.47 and 1,348.13

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Solution

The fourth proportional to 3,945.80, 5,917.47 and 1,348.13 is: 2,021.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.80 : 5,917.47 = 1,348.13 : x
  2. Step 2: Convert to fraction form
    3,945.80/5,917.47 = 1,348.13/x
  3. Step 3: Cross multiply
    3,945.80x = 5,917.47 × 1,348.13
  4. Step 4: Simplify right side
    3,945.80x = 7,977,489.24
  5. Step 5: Solve for x
    x = 7,977,489.24/3,945.80
  6. Step 6: Final answer
    x = 2,021.77

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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.