Home / 3,979.81-5,960-3,435.49

Finding the Fourth Proportional to 3,979.81, 5,960 and 3,435.49

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Solution

The fourth proportional to 3,979.81, 5,960 and 3,435.49 is: 5,144.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.81 : 5,960 = 3,435.49 : x
  2. Step 2: Convert to fraction form
    3,979.81/5,960 = 3,435.49/x
  3. Step 3: Cross multiply
    3,979.81x = 5,960 × 3,435.49
  4. Step 4: Simplify right side
    3,979.81x = 20,475,520.40
  5. Step 5: Solve for x
    x = 20,475,520.40/3,979.81
  6. Step 6: Final answer
    x = 5,144.85

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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.