Home / 3,945.42-5,918.76-1,347.75

Finding the Fourth Proportional to 3,945.42, 5,918.76 and 1,347.75

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Solution

The fourth proportional to 3,945.42, 5,918.76 and 1,347.75 is: 2,021.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.42 : 5,918.76 = 1,347.75 : x
  2. Step 2: Convert to fraction form
    3,945.42/5,918.76 = 1,347.75/x
  3. Step 3: Cross multiply
    3,945.42x = 5,918.76 × 1,347.75
  4. Step 4: Simplify right side
    3,945.42x = 7,977,008.79
  5. Step 5: Solve for x
    x = 7,977,008.79/3,945.42
  6. Step 6: Final answer
    x = 2,021.84

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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.