Home / 8,128.32-11,213.20-5,886.56

Finding the Fourth Proportional to 8,128.32, 11,213.20 and 5,886.56

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Solution

The fourth proportional to 8,128.32, 11,213.20 and 5,886.56 is: 8,120.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.32 : 11,213.20 = 5,886.56 : x
  2. Step 2: Convert to fraction form
    8,128.32/11,213.20 = 5,886.56/x
  3. Step 3: Cross multiply
    8,128.32x = 11,213.20 × 5,886.56
  4. Step 4: Simplify right side
    8,128.32x = 66,007,174.59
  5. Step 5: Solve for x
    x = 66,007,174.59/8,128.32
  6. Step 6: Final answer
    x = 8,120.64

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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.