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Finding the Fourth Proportional to 11,992.66, 17,987.70 and 3,228.46

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Solution

The fourth proportional to 11,992.66, 17,987.70 and 3,228.46 is: 4,842.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,992.66 : 17,987.70 = 3,228.46 : x
  2. Step 2: Convert to fraction form
    11,992.66/17,987.70 = 3,228.46/x
  3. Step 3: Cross multiply
    11,992.66x = 17,987.70 × 3,228.46
  4. Step 4: Simplify right side
    11,992.66x = 58,072,569.94
  5. Step 5: Solve for x
    x = 58,072,569.94/11,992.66
  6. Step 6: Final answer
    x = 4,842.34

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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.