Home / 3,939.84-5,911.10-1,344.60

Finding the Fourth Proportional to 3,939.84, 5,911.10 and 1,344.60

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Solution

The fourth proportional to 3,939.84, 5,911.10 and 1,344.60 is: 2,017.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.84 : 5,911.10 = 1,344.60 : x
  2. Step 2: Convert to fraction form
    3,939.84/5,911.10 = 1,344.60/x
  3. Step 3: Cross multiply
    3,939.84x = 5,911.10 × 1,344.60
  4. Step 4: Simplify right side
    3,939.84x = 7,948,065.06
  5. Step 5: Solve for x
    x = 7,948,065.06/3,939.84
  6. Step 6: Final answer
    x = 2,017.36

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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.