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Finding the Fourth Proportional to 2,469.87, 3,704.94 and 621.18

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Solution

The fourth proportional to 2,469.87, 3,704.94 and 621.18 is: 931.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,469.87 : 3,704.94 = 621.18 : x
  2. Step 2: Convert to fraction form
    2,469.87/3,704.94 = 621.18/x
  3. Step 3: Cross multiply
    2,469.87x = 3,704.94 × 621.18
  4. Step 4: Simplify right side
    2,469.87x = 2,301,434.63
  5. Step 5: Solve for x
    x = 2,301,434.63/2,469.87
  6. Step 6: Final answer
    x = 931.80

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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.