Home / 2,628.64-3,940.30-1,704.78

Finding the Fourth Proportional to 2,628.64, 3,940.30 and 1,704.78

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Solution

The fourth proportional to 2,628.64, 3,940.30 and 1,704.78 is: 2,555.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.64 : 3,940.30 = 1,704.78 : x
  2. Step 2: Convert to fraction form
    2,628.64/3,940.30 = 1,704.78/x
  3. Step 3: Cross multiply
    2,628.64x = 3,940.30 × 1,704.78
  4. Step 4: Simplify right side
    2,628.64x = 6,717,344.63
  5. Step 5: Solve for x
    x = 6,717,344.63/2,628.64
  6. Step 6: Final answer
    x = 2,555.44

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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.