Home / 4,180.80-6,272.16-2,128.32

Finding the Fourth Proportional to 4,180.80, 6,272.16 and 2,128.32

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Solution

The fourth proportional to 4,180.80, 6,272.16 and 2,128.32 is: 3,192.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,180.80 : 6,272.16 = 2,128.32 : x
  2. Step 2: Convert to fraction form
    4,180.80/6,272.16 = 2,128.32/x
  3. Step 3: Cross multiply
    4,180.80x = 6,272.16 × 2,128.32
  4. Step 4: Simplify right side
    4,180.80x = 13,349,163.57
  5. Step 5: Solve for x
    x = 13,349,163.57/4,180.80
  6. Step 6: Final answer
    x = 3,192.97

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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.