Home / 8,118.28-12,177.28-2,571.61

Finding the Fourth Proportional to 8,118.28, 12,177.28 and 2,571.61

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Solution

The fourth proportional to 8,118.28, 12,177.28 and 2,571.61 is: 3,857.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.28 : 12,177.28 = 2,571.61 : x
  2. Step 2: Convert to fraction form
    8,118.28/12,177.28 = 2,571.61/x
  3. Step 3: Cross multiply
    8,118.28x = 12,177.28 × 2,571.61
  4. Step 4: Simplify right side
    8,118.28x = 31,315,215.02
  5. Step 5: Solve for x
    x = 31,315,215.02/8,118.28
  6. Step 6: Final answer
    x = 3,857.37

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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.