Home / 6,651.21-9,181.30-3,998.11

Finding the Fourth Proportional to 6,651.21, 9,181.30 and 3,998.11

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Solution

The fourth proportional to 6,651.21, 9,181.30 and 3,998.11 is: 5,518.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,651.21 : 9,181.30 = 3,998.11 : x
  2. Step 2: Convert to fraction form
    6,651.21/9,181.30 = 3,998.11/x
  3. Step 3: Cross multiply
    6,651.21x = 9,181.30 × 3,998.11
  4. Step 4: Simplify right side
    6,651.21x = 36,707,839.11
  5. Step 5: Solve for x
    x = 36,707,839.11/6,651.21
  6. Step 6: Final answer
    x = 5,518.97

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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.