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Finding the Fourth Proportional to 1,724.16, 2,587.11 and 798.68

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Solution

The fourth proportional to 1,724.16, 2,587.11 and 798.68 is: 1,198.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,724.16 : 2,587.11 = 798.68 : x
  2. Step 2: Convert to fraction form
    1,724.16/2,587.11 = 798.68/x
  3. Step 3: Cross multiply
    1,724.16x = 2,587.11 × 798.68
  4. Step 4: Simplify right side
    1,724.16x = 2,066,273.01
  5. Step 5: Solve for x
    x = 2,066,273.01/1,724.16
  6. Step 6: Final answer
    x = 1,198.42

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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.