Home / 5,212.89-7,193.79-2,855.25

Finding the Fourth Proportional to 5,212.89, 7,193.79 and 2,855.25

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Solution

The fourth proportional to 5,212.89, 7,193.79 and 2,855.25 is: 3,940.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,212.89 : 7,193.79 = 2,855.25 : x
  2. Step 2: Convert to fraction form
    5,212.89/7,193.79 = 2,855.25/x
  3. Step 3: Cross multiply
    5,212.89x = 7,193.79 × 2,855.25
  4. Step 4: Simplify right side
    5,212.89x = 20,540,068.90
  5. Step 5: Solve for x
    x = 20,540,068.90/5,212.89
  6. Step 6: Final answer
    x = 3,940.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.