Home / 8,236.82-12,356.40-2,688.78

Finding the Fourth Proportional to 8,236.82, 12,356.40 and 2,688.78

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Solution

The fourth proportional to 8,236.82, 12,356.40 and 2,688.78 is: 4,033.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,236.82 : 12,356.40 = 2,688.78 : x
  2. Step 2: Convert to fraction form
    8,236.82/12,356.40 = 2,688.78/x
  3. Step 3: Cross multiply
    8,236.82x = 12,356.40 × 2,688.78
  4. Step 4: Simplify right side
    8,236.82x = 33,223,641.19
  5. Step 5: Solve for x
    x = 33,223,641.19/8,236.82
  6. Step 6: Final answer
    x = 4,033.55

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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.