Home / 1,872.68-2,583.78-1,209.56

Finding the Fourth Proportional to 1,872.68, 2,583.78 and 1,209.56

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Solution

The fourth proportional to 1,872.68, 2,583.78 and 1,209.56 is: 1,668.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872.68 : 2,583.78 = 1,209.56 : x
  2. Step 2: Convert to fraction form
    1,872.68/2,583.78 = 1,209.56/x
  3. Step 3: Cross multiply
    1,872.68x = 2,583.78 × 1,209.56
  4. Step 4: Simplify right side
    1,872.68x = 3,125,236.94
  5. Step 5: Solve for x
    x = 3,125,236.94/1,872.68
  6. Step 6: Final answer
    x = 1,668.86

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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.