Home / 8,236.72-12,356.79-2,690.38

Finding the Fourth Proportional to 8,236.72, 12,356.79 and 2,690.38

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Solution

The fourth proportional to 8,236.72, 12,356.79 and 2,690.38 is: 4,036.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,236.72 : 12,356.79 = 2,690.38 : x
  2. Step 2: Convert to fraction form
    8,236.72/12,356.79 = 2,690.38/x
  3. Step 3: Cross multiply
    8,236.72x = 12,356.79 × 2,690.38
  4. Step 4: Simplify right side
    8,236.72x = 33,244,460.68
  5. Step 5: Solve for x
    x = 33,244,460.68/8,236.72
  6. Step 6: Final answer
    x = 4,036.13

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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.