Home / 5,137.26-7,689.20-2,668.56

Finding the Fourth Proportional to 5,137.26, 7,689.20 and 2,668.56

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Solution

The fourth proportional to 5,137.26, 7,689.20 and 2,668.56 is: 3,994.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,137.26 : 7,689.20 = 2,668.56 : x
  2. Step 2: Convert to fraction form
    5,137.26/7,689.20 = 2,668.56/x
  3. Step 3: Cross multiply
    5,137.26x = 7,689.20 × 2,668.56
  4. Step 4: Simplify right side
    5,137.26x = 20,519,091.55
  5. Step 5: Solve for x
    x = 20,519,091.55/5,137.26
  6. Step 6: Final answer
    x = 3,994.17

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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.