Home / 6,921.20-9,551.25-3,777.39

Finding the Fourth Proportional to 6,921.20, 9,551.25 and 3,777.39

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Solution

The fourth proportional to 6,921.20, 9,551.25 and 3,777.39 is: 5,212.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.20 : 9,551.25 = 3,777.39 : x
  2. Step 2: Convert to fraction form
    6,921.20/9,551.25 = 3,777.39/x
  3. Step 3: Cross multiply
    6,921.20x = 9,551.25 × 3,777.39
  4. Step 4: Simplify right side
    6,921.20x = 36,078,796.24
  5. Step 5: Solve for x
    x = 36,078,796.24/6,921.20
  6. Step 6: Final answer
    x = 5,212.79

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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.