Home / 8,121.92-11,208.25-4,395.92

Finding the Fourth Proportional to 8,121.92, 11,208.25 and 4,395.92

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Solution

The fourth proportional to 8,121.92, 11,208.25 and 4,395.92 is: 6,066.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.92 : 11,208.25 = 4,395.92 : x
  2. Step 2: Convert to fraction form
    8,121.92/11,208.25 = 4,395.92/x
  3. Step 3: Cross multiply
    8,121.92x = 11,208.25 × 4,395.92
  4. Step 4: Simplify right side
    8,121.92x = 49,270,570.34
  5. Step 5: Solve for x
    x = 49,270,570.34/8,121.92
  6. Step 6: Final answer
    x = 6,066.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.