Home / 2,748.09-4,122.74-1,286.45

Finding the Fourth Proportional to 2,748.09, 4,122.74 and 1,286.45

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Solution

The fourth proportional to 2,748.09, 4,122.74 and 1,286.45 is: 1,929.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.09 : 4,122.74 = 1,286.45 : x
  2. Step 2: Convert to fraction form
    2,748.09/4,122.74 = 1,286.45/x
  3. Step 3: Cross multiply
    2,748.09x = 4,122.74 × 1,286.45
  4. Step 4: Simplify right side
    2,748.09x = 5,303,698.87
  5. Step 5: Solve for x
    x = 5,303,698.87/2,748.09
  6. Step 6: Final answer
    x = 1,929.96

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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.