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Finding the Fourth Proportional to 8,455.41, 11,668.91 and 4,919.49

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Solution

The fourth proportional to 8,455.41, 11,668.91 and 4,919.49 is: 6,789.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.41 : 11,668.91 = 4,919.49 : x
  2. Step 2: Convert to fraction form
    8,455.41/11,668.91 = 4,919.49/x
  3. Step 3: Cross multiply
    8,455.41x = 11,668.91 × 4,919.49
  4. Step 4: Simplify right side
    8,455.41x = 57,405,061.46
  5. Step 5: Solve for x
    x = 57,405,061.46/8,455.41
  6. Step 6: Final answer
    x = 6,789.15

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.