Home / 5,185.85-7,156.47-2,828.03

Finding the Fourth Proportional to 5,185.85, 7,156.47 and 2,828.03

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Solution

The fourth proportional to 5,185.85, 7,156.47 and 2,828.03 is: 3,902.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.85 : 7,156.47 = 2,828.03 : x
  2. Step 2: Convert to fraction form
    5,185.85/7,156.47 = 2,828.03/x
  3. Step 3: Cross multiply
    5,185.85x = 7,156.47 × 2,828.03
  4. Step 4: Simplify right side
    5,185.85x = 20,238,676.07
  5. Step 5: Solve for x
    x = 20,238,676.07/5,185.85
  6. Step 6: Final answer
    x = 3,902.68

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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.