Home / 8,106.62-11,188.87-5,120.55

Finding the Fourth Proportional to 8,106.62, 11,188.87 and 5,120.55

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Solution

The fourth proportional to 8,106.62, 11,188.87 and 5,120.55 is: 7,067.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,106.62 : 11,188.87 = 5,120.55 : x
  2. Step 2: Convert to fraction form
    8,106.62/11,188.87 = 5,120.55/x
  3. Step 3: Cross multiply
    8,106.62x = 11,188.87 × 5,120.55
  4. Step 4: Simplify right side
    8,106.62x = 57,293,155.48
  5. Step 5: Solve for x
    x = 57,293,155.48/8,106.62
  6. Step 6: Final answer
    x = 7,067.46

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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.