Home / 7,771.16-11,647-6,121.18

Finding the Fourth Proportional to 7,771.16, 11,647 and 6,121.18

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Solution

The fourth proportional to 7,771.16, 11,647 and 6,121.18 is: 9,174.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,771.16 : 11,647 = 6,121.18 : x
  2. Step 2: Convert to fraction form
    7,771.16/11,647 = 6,121.18/x
  3. Step 3: Cross multiply
    7,771.16x = 11,647 × 6,121.18
  4. Step 4: Simplify right side
    7,771.16x = 71,293,383.46
  5. Step 5: Solve for x
    x = 71,293,383.46/7,771.16
  6. Step 6: Final answer
    x = 9,174.10

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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.