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Finding the Fourth Proportional to 3,393.90, 5,089.23 and 1,660.50

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Solution

The fourth proportional to 3,393.90, 5,089.23 and 1,660.50 is: 2,489.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,393.90 : 5,089.23 = 1,660.50 : x
  2. Step 2: Convert to fraction form
    3,393.90/5,089.23 = 1,660.50/x
  3. Step 3: Cross multiply
    3,393.90x = 5,089.23 × 1,660.50
  4. Step 4: Simplify right side
    3,393.90x = 8,450,666.42
  5. Step 5: Solve for x
    x = 8,450,666.42/3,393.90
  6. Step 6: Final answer
    x = 2,489.96

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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.