Home / 8,685.93-13,028.82-2,112.08

Finding the Fourth Proportional to 8,685.93, 13,028.82 and 2,112.08

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Solution

The fourth proportional to 8,685.93, 13,028.82 and 2,112.08 is: 3,168.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.93 : 13,028.82 = 2,112.08 : x
  2. Step 2: Convert to fraction form
    8,685.93/13,028.82 = 2,112.08/x
  3. Step 3: Cross multiply
    8,685.93x = 13,028.82 × 2,112.08
  4. Step 4: Simplify right side
    8,685.93x = 27,517,837.08
  5. Step 5: Solve for x
    x = 27,517,837.08/8,685.93
  6. Step 6: Final answer
    x = 3,168.09

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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.