Home / 3,318.85-4,579.18-2,138.50

Finding the Fourth Proportional to 3,318.85, 4,579.18 and 2,138.50

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Solution

The fourth proportional to 3,318.85, 4,579.18 and 2,138.50 is: 2,950.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.85 : 4,579.18 = 2,138.50 : x
  2. Step 2: Convert to fraction form
    3,318.85/4,579.18 = 2,138.50/x
  3. Step 3: Cross multiply
    3,318.85x = 4,579.18 × 2,138.50
  4. Step 4: Simplify right side
    3,318.85x = 9,792,576.43
  5. Step 5: Solve for x
    x = 9,792,576.43/3,318.85
  6. Step 6: Final answer
    x = 2,950.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.