Home / 8,571.20-12,857.75-2,726.45

Finding the Fourth Proportional to 8,571.20, 12,857.75 and 2,726.45

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Solution

The fourth proportional to 8,571.20, 12,857.75 and 2,726.45 is: 4,089.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,571.20 : 12,857.75 = 2,726.45 : x
  2. Step 2: Convert to fraction form
    8,571.20/12,857.75 = 2,726.45/x
  3. Step 3: Cross multiply
    8,571.20x = 12,857.75 × 2,726.45
  4. Step 4: Simplify right side
    8,571.20x = 35,055,934.57
  5. Step 5: Solve for x
    x = 35,055,934.57/8,571.20
  6. Step 6: Final answer
    x = 4,089.97

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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.