Home / 8,813.21-13,218.51-2,571.54

Finding the Fourth Proportional to 8,813.21, 13,218.51 and 2,571.54

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Solution

The fourth proportional to 8,813.21, 13,218.51 and 2,571.54 is: 3,856.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.21 : 13,218.51 = 2,571.54 : x
  2. Step 2: Convert to fraction form
    8,813.21/13,218.51 = 2,571.54/x
  3. Step 3: Cross multiply
    8,813.21x = 13,218.51 × 2,571.54
  4. Step 4: Simplify right side
    8,813.21x = 33,991,927.21
  5. Step 5: Solve for x
    x = 33,991,927.21/8,813.21
  6. Step 6: Final answer
    x = 3,856.93

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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.