Home / 1,628.35-2,247.21-1,278.43

Finding the Fourth Proportional to 1,628.35, 2,247.21 and 1,278.43

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Solution

The fourth proportional to 1,628.35, 2,247.21 and 1,278.43 is: 1,764.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.35 : 2,247.21 = 1,278.43 : x
  2. Step 2: Convert to fraction form
    1,628.35/2,247.21 = 1,278.43/x
  3. Step 3: Cross multiply
    1,628.35x = 2,247.21 × 1,278.43
  4. Step 4: Simplify right side
    1,628.35x = 2,872,900.68
  5. Step 5: Solve for x
    x = 2,872,900.68/1,628.35
  6. Step 6: Final answer
    x = 1,764.30

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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.