Home / 5,042.24-7,561.92-2,120

Finding the Fourth Proportional to 5,042.24, 7,561.92 and 2,120

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Solution

The fourth proportional to 5,042.24, 7,561.92 and 2,120 is: 3,179.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,042.24 : 7,561.92 = 2,120 : x
  2. Step 2: Convert to fraction form
    5,042.24/7,561.92 = 2,120/x
  3. Step 3: Cross multiply
    5,042.24x = 7,561.92 × 2,120
  4. Step 4: Simplify right side
    5,042.24x = 16,031,270.40
  5. Step 5: Solve for x
    x = 16,031,270.40/5,042.24
  6. Step 6: Final answer
    x = 3,179.39

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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.