Home / 5,180.94-7,771.32-1,285.34

Finding the Fourth Proportional to 5,180.94, 7,771.32 and 1,285.34

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Solution

The fourth proportional to 5,180.94, 7,771.32 and 1,285.34 is: 1,927.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.94 : 7,771.32 = 1,285.34 : x
  2. Step 2: Convert to fraction form
    5,180.94/7,771.32 = 1,285.34/x
  3. Step 3: Cross multiply
    5,180.94x = 7,771.32 × 1,285.34
  4. Step 4: Simplify right side
    5,180.94x = 9,988,749.59
  5. Step 5: Solve for x
    x = 9,988,749.59/5,180.94
  6. Step 6: Final answer
    x = 1,927.98

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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.