Home / 8,685.48-13,028.22-2,111.66

Finding the Fourth Proportional to 8,685.48, 13,028.22 and 2,111.66

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Solution

The fourth proportional to 8,685.48, 13,028.22 and 2,111.66 is: 3,167.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.48 : 13,028.22 = 2,111.66 : x
  2. Step 2: Convert to fraction form
    8,685.48/13,028.22 = 2,111.66/x
  3. Step 3: Cross multiply
    8,685.48x = 13,028.22 × 2,111.66
  4. Step 4: Simplify right side
    8,685.48x = 27,511,171.05
  5. Step 5: Solve for x
    x = 27,511,171.05/8,685.48
  6. Step 6: Final answer
    x = 3,167.49

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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.