Home / 8,811.05-13,218.53-2,571.21

Finding the Fourth Proportional to 8,811.05, 13,218.53 and 2,571.21

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Solution

The fourth proportional to 8,811.05, 13,218.53 and 2,571.21 is: 3,857.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.05 : 13,218.53 = 2,571.21 : x
  2. Step 2: Convert to fraction form
    8,811.05/13,218.53 = 2,571.21/x
  3. Step 3: Cross multiply
    8,811.05x = 13,218.53 × 2,571.21
  4. Step 4: Simplify right side
    8,811.05x = 33,987,603.67
  5. Step 5: Solve for x
    x = 33,987,603.67/8,811.05
  6. Step 6: Final answer
    x = 3,857.39

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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.