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Finding the Fourth Proportional to 7,768.74, 11,647.01 and 5,297.42

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Solution

The fourth proportional to 7,768.74, 11,647.01 and 5,297.42 is: 7,941.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,768.74 : 11,647.01 = 5,297.42 : x
  2. Step 2: Convert to fraction form
    7,768.74/11,647.01 = 5,297.42/x
  3. Step 3: Cross multiply
    7,768.74x = 11,647.01 × 5,297.42
  4. Step 4: Simplify right side
    7,768.74x = 61,699,103.71
  5. Step 5: Solve for x
    x = 61,699,103.71/7,768.74
  6. Step 6: Final answer
    x = 7,941.97

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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.