Home / 6,121.56-8,445.34-3,996.42

Finding the Fourth Proportional to 6,121.56, 8,445.34 and 3,996.42

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Solution

The fourth proportional to 6,121.56, 8,445.34 and 3,996.42 is: 5,513.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121.56 : 8,445.34 = 3,996.42 : x
  2. Step 2: Convert to fraction form
    6,121.56/8,445.34 = 3,996.42/x
  3. Step 3: Cross multiply
    6,121.56x = 8,445.34 × 3,996.42
  4. Step 4: Simplify right side
    6,121.56x = 33,751,076.53
  5. Step 5: Solve for x
    x = 33,751,076.53/6,121.56
  6. Step 6: Final answer
    x = 5,513.47

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Half scale
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Double scale
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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.