Home / 6,821.28-10,236.24-3,905.28

Finding the Fourth Proportional to 6,821.28, 10,236.24 and 3,905.28

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Solution

The fourth proportional to 6,821.28, 10,236.24 and 3,905.28 is: 5,860.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,821.28 : 10,236.24 = 3,905.28 : x
  2. Step 2: Convert to fraction form
    6,821.28/10,236.24 = 3,905.28/x
  3. Step 3: Cross multiply
    6,821.28x = 10,236.24 × 3,905.28
  4. Step 4: Simplify right side
    6,821.28x = 39,975,383.35
  5. Step 5: Solve for x
    x = 39,975,383.35/6,821.28
  6. Step 6: Final answer
    x = 5,860.39

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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.