Home / 2,660.46-3,990.62-1,274.36

Finding the Fourth Proportional to 2,660.46, 3,990.62 and 1,274.36

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Solution

The fourth proportional to 2,660.46, 3,990.62 and 1,274.36 is: 1,911.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.46 : 3,990.62 = 1,274.36 : x
  2. Step 2: Convert to fraction form
    2,660.46/3,990.62 = 1,274.36/x
  3. Step 3: Cross multiply
    2,660.46x = 3,990.62 × 1,274.36
  4. Step 4: Simplify right side
    2,660.46x = 5,085,486.50
  5. Step 5: Solve for x
    x = 5,085,486.50/2,660.46
  6. Step 6: Final answer
    x = 1,911.51

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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.