Home / 5,212.90-7,193.79-2,855.02

Finding the Fourth Proportional to 5,212.90, 7,193.79 and 2,855.02

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Solution

The fourth proportional to 5,212.90, 7,193.79 and 2,855.02 is: 3,939.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,212.90 : 7,193.79 = 2,855.02 : x
  2. Step 2: Convert to fraction form
    5,212.90/7,193.79 = 2,855.02/x
  3. Step 3: Cross multiply
    5,212.90x = 7,193.79 × 2,855.02
  4. Step 4: Simplify right side
    5,212.90x = 20,538,414.33
  5. Step 5: Solve for x
    x = 20,538,414.33/5,212.90
  6. Step 6: Final answer
    x = 3,939.92

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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.