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Finding the Fourth Proportional to 11,772.62, 17,661.12 and 3,875.58

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Solution

The fourth proportional to 11,772.62, 17,661.12 and 3,875.58 is: 5,814.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,772.62 : 17,661.12 = 3,875.58 : x
  2. Step 2: Convert to fraction form
    11,772.62/17,661.12 = 3,875.58/x
  3. Step 3: Cross multiply
    11,772.62x = 17,661.12 × 3,875.58
  4. Step 4: Simplify right side
    11,772.62x = 68,447,083.45
  5. Step 5: Solve for x
    x = 68,447,083.45/11,772.62
  6. Step 6: Final answer
    x = 5,814.09

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1.5x scale

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.