Home / 3,945.13-5,918.39-1,347.46

Finding the Fourth Proportional to 3,945.13, 5,918.39 and 1,347.46

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Solution

The fourth proportional to 3,945.13, 5,918.39 and 1,347.46 is: 2,021.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.13 : 5,918.39 = 1,347.46 : x
  2. Step 2: Convert to fraction form
    3,945.13/5,918.39 = 1,347.46/x
  3. Step 3: Cross multiply
    3,945.13x = 5,918.39 × 1,347.46
  4. Step 4: Simplify right side
    3,945.13x = 7,974,793.79
  5. Step 5: Solve for x
    x = 7,974,793.79/3,945.13
  6. Step 6: Final answer
    x = 2,021.43

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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.