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Finding the Fourth Proportional to 3,458.89, 5,184.02 and 1,728.01

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Solution

The fourth proportional to 3,458.89, 5,184.02 and 1,728.01 is: 2,589.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,458.89 : 5,184.02 = 1,728.01 : x
  2. Step 2: Convert to fraction form
    3,458.89/5,184.02 = 1,728.01/x
  3. Step 3: Cross multiply
    3,458.89x = 5,184.02 × 1,728.01
  4. Step 4: Simplify right side
    3,458.89x = 8,958,029.76
  5. Step 5: Solve for x
    x = 8,958,029.76/3,458.89
  6. Step 6: Final answer
    x = 2,589.86

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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.