Home / 1,392.43-2,091.03-1,236.61

Finding the Fourth Proportional to 1,392.43, 2,091.03 and 1,236.61

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Solution

The fourth proportional to 1,392.43, 2,091.03 and 1,236.61 is: 1,857.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.43 : 2,091.03 = 1,236.61 : x
  2. Step 2: Convert to fraction form
    1,392.43/2,091.03 = 1,236.61/x
  3. Step 3: Cross multiply
    1,392.43x = 2,091.03 × 1,236.61
  4. Step 4: Simplify right side
    1,392.43x = 2,585,788.61
  5. Step 5: Solve for x
    x = 2,585,788.61/1,392.43
  6. Step 6: Final answer
    x = 1,857.03

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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.