Home / 6,821.16-9,412.20-3,836.88

Finding the Fourth Proportional to 6,821.16, 9,412.20 and 3,836.88

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Solution

The fourth proportional to 6,821.16, 9,412.20 and 3,836.88 is: 5,294.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,821.16 : 9,412.20 = 3,836.88 : x
  2. Step 2: Convert to fraction form
    6,821.16/9,412.20 = 3,836.88/x
  3. Step 3: Cross multiply
    6,821.16x = 9,412.20 × 3,836.88
  4. Step 4: Simplify right side
    6,821.16x = 36,113,481.94
  5. Step 5: Solve for x
    x = 36,113,481.94/6,821.16
  6. Step 6: Final answer
    x = 5,294.33

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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.