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Finding the Fourth Proportional to 11,891.58, 17,837.36 and 3,571.66

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Solution

The fourth proportional to 11,891.58, 17,837.36 and 3,571.66 is: 5,357.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,891.58 : 17,837.36 = 3,571.66 : x
  2. Step 2: Convert to fraction form
    11,891.58/17,837.36 = 3,571.66/x
  3. Step 3: Cross multiply
    11,891.58x = 17,837.36 × 3,571.66
  4. Step 4: Simplify right side
    11,891.58x = 63,708,985.22
  5. Step 5: Solve for x
    x = 63,708,985.22/11,891.58
  6. Step 6: Final answer
    x = 5,357.49

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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.