Home / 2,770.52-4,147.98-2,119.28

Finding the Fourth Proportional to 2,770.52, 4,147.98 and 2,119.28

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Solution

The fourth proportional to 2,770.52, 4,147.98 and 2,119.28 is: 3,172.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.52 : 4,147.98 = 2,119.28 : x
  2. Step 2: Convert to fraction form
    2,770.52/4,147.98 = 2,119.28/x
  3. Step 3: Cross multiply
    2,770.52x = 4,147.98 × 2,119.28
  4. Step 4: Simplify right side
    2,770.52x = 8,790,731.05
  5. Step 5: Solve for x
    x = 8,790,731.05/2,770.52
  6. Step 6: Final answer
    x = 3,172.95

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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.