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Finding the Fourth Proportional to 8,610.66, 11,888.42 and 6,617.64

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Solution

The fourth proportional to 8,610.66, 11,888.42 and 6,617.64 is: 9,136.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.66 : 11,888.42 = 6,617.64 : x
  2. Step 2: Convert to fraction form
    8,610.66/11,888.42 = 6,617.64/x
  3. Step 3: Cross multiply
    8,610.66x = 11,888.42 × 6,617.64
  4. Step 4: Simplify right side
    8,610.66x = 78,673,283.73
  5. Step 5: Solve for x
    x = 78,673,283.73/8,610.66
  6. Step 6: Final answer
    x = 9,136.73

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1.5x scale

Why These Related Problems?

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