Home / 7,771.90-11,662.72-5,176.66

Finding the Fourth Proportional to 7,771.90, 11,662.72 and 5,176.66

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Solution

The fourth proportional to 7,771.90, 11,662.72 and 5,176.66 is: 7,768.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,771.90 : 11,662.72 = 5,176.66 : x
  2. Step 2: Convert to fraction form
    7,771.90/11,662.72 = 5,176.66/x
  3. Step 3: Cross multiply
    7,771.90x = 11,662.72 × 5,176.66
  4. Step 4: Simplify right side
    7,771.90x = 60,373,936.12
  5. Step 5: Solve for x
    x = 60,373,936.12/7,771.90
  6. Step 6: Final answer
    x = 7,768.23

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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.