Home / 5,185.82-7,156.60-2,828.09

Finding the Fourth Proportional to 5,185.82, 7,156.60 and 2,828.09

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Solution

The fourth proportional to 5,185.82, 7,156.60 and 2,828.09 is: 3,902.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.82 : 7,156.60 = 2,828.09 : x
  2. Step 2: Convert to fraction form
    5,185.82/7,156.60 = 2,828.09/x
  3. Step 3: Cross multiply
    5,185.82x = 7,156.60 × 2,828.09
  4. Step 4: Simplify right side
    5,185.82x = 20,239,466.04
  5. Step 5: Solve for x
    x = 20,239,466.04/5,185.82
  6. Step 6: Final answer
    x = 3,902.85

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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.