Home / 5,180.82-7,771.15-1,285.26

Finding the Fourth Proportional to 5,180.82, 7,771.15 and 1,285.26

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Solution

The fourth proportional to 5,180.82, 7,771.15 and 1,285.26 is: 1,927.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.82 : 7,771.15 = 1,285.26 : x
  2. Step 2: Convert to fraction form
    5,180.82/7,771.15 = 1,285.26/x
  3. Step 3: Cross multiply
    5,180.82x = 7,771.15 × 1,285.26
  4. Step 4: Simplify right side
    5,180.82x = 9,987,948.25
  5. Step 5: Solve for x
    x = 9,987,948.25/5,180.82
  6. Step 6: Final answer
    x = 1,927.87

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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.