Home / 2,821.76-4,227.36-2,516.72

Finding the Fourth Proportional to 2,821.76, 4,227.36 and 2,516.72

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Solution

The fourth proportional to 2,821.76, 4,227.36 and 2,516.72 is: 3,770.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.76 : 4,227.36 = 2,516.72 : x
  2. Step 2: Convert to fraction form
    2,821.76/4,227.36 = 2,516.72/x
  3. Step 3: Cross multiply
    2,821.76x = 4,227.36 × 2,516.72
  4. Step 4: Simplify right side
    2,821.76x = 10,639,081.46
  5. Step 5: Solve for x
    x = 10,639,081.46/2,821.76
  6. Step 6: Final answer
    x = 3,770.37

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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.