Home / 5,042.70-7,559.43-2,121.21

Finding the Fourth Proportional to 5,042.70, 7,559.43 and 2,121.21

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Solution

The fourth proportional to 5,042.70, 7,559.43 and 2,121.21 is: 3,179.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,042.70 : 7,559.43 = 2,121.21 : x
  2. Step 2: Convert to fraction form
    5,042.70/7,559.43 = 2,121.21/x
  3. Step 3: Cross multiply
    5,042.70x = 7,559.43 × 2,121.21
  4. Step 4: Simplify right side
    5,042.70x = 16,035,138.51
  5. Step 5: Solve for x
    x = 16,035,138.51/5,042.70
  6. Step 6: Final answer
    x = 3,179.87

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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.