Home / 1,720.31-2,579.24-1,226.73

Finding the Fourth Proportional to 1,720.31, 2,579.24 and 1,226.73

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Solution

The fourth proportional to 1,720.31, 2,579.24 and 1,226.73 is: 1,839.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.31 : 2,579.24 = 1,226.73 : x
  2. Step 2: Convert to fraction form
    1,720.31/2,579.24 = 1,226.73/x
  3. Step 3: Cross multiply
    1,720.31x = 2,579.24 × 1,226.73
  4. Step 4: Simplify right side
    1,720.31x = 3,164,034.15
  5. Step 5: Solve for x
    x = 3,164,034.15/1,720.31
  6. Step 6: Final answer
    x = 1,839.22

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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.