Home / 2,540.90-3,808.62-1,660.64

Finding the Fourth Proportional to 2,540.90, 3,808.62 and 1,660.64

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Solution

The fourth proportional to 2,540.90, 3,808.62 and 1,660.64 is: 2,489.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.90 : 3,808.62 = 1,660.64 : x
  2. Step 2: Convert to fraction form
    2,540.90/3,808.62 = 1,660.64/x
  3. Step 3: Cross multiply
    2,540.90x = 3,808.62 × 1,660.64
  4. Step 4: Simplify right side
    2,540.90x = 6,324,727.67
  5. Step 5: Solve for x
    x = 6,324,727.67/2,540.90
  6. Step 6: Final answer
    x = 2,489.17

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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.