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Finding the Fourth Proportional to 1,718.56, 2,579.08 and 1,329.54

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Solution

The fourth proportional to 1,718.56, 2,579.08 and 1,329.54 is: 1,995.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718.56 : 2,579.08 = 1,329.54 : x
  2. Step 2: Convert to fraction form
    1,718.56/2,579.08 = 1,329.54/x
  3. Step 3: Cross multiply
    1,718.56x = 2,579.08 × 1,329.54
  4. Step 4: Simplify right side
    1,718.56x = 3,428,990.02
  5. Step 5: Solve for x
    x = 3,428,990.02/1,718.56
  6. Step 6: Final answer
    x = 1,995.27

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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.