Home / 8,721.45-13,078.26-2,797.25

Finding the Fourth Proportional to 8,721.45, 13,078.26 and 2,797.25

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Solution

The fourth proportional to 8,721.45, 13,078.26 and 2,797.25 is: 4,194.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.45 : 13,078.26 = 2,797.25 : x
  2. Step 2: Convert to fraction form
    8,721.45/13,078.26 = 2,797.25/x
  3. Step 3: Cross multiply
    8,721.45x = 13,078.26 × 2,797.25
  4. Step 4: Simplify right side
    8,721.45x = 36,583,097.39
  5. Step 5: Solve for x
    x = 36,583,097.39/8,721.45
  6. Step 6: Final answer
    x = 4,194.61

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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.