Home / 1,867.20-2,576.91-1,028.06

Finding the Fourth Proportional to 1,867.20, 2,576.91 and 1,028.06

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Solution

The fourth proportional to 1,867.20, 2,576.91 and 1,028.06 is: 1,418.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.20 : 2,576.91 = 1,028.06 : x
  2. Step 2: Convert to fraction form
    1,867.20/2,576.91 = 1,028.06/x
  3. Step 3: Cross multiply
    1,867.20x = 2,576.91 × 1,028.06
  4. Step 4: Simplify right side
    1,867.20x = 2,649,218.09
  5. Step 5: Solve for x
    x = 2,649,218.09/1,867.20
  6. Step 6: Final answer
    x = 1,418.82

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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.