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Finding the Fourth Proportional to 3,900.30, 5,850.45 and 3,669.45

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Solution

The fourth proportional to 3,900.30, 5,850.45 and 3,669.45 is: 5,504.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.30 : 5,850.45 = 3,669.45 : x
  2. Step 2: Convert to fraction form
    3,900.30/5,850.45 = 3,669.45/x
  3. Step 3: Cross multiply
    3,900.30x = 5,850.45 × 3,669.45
  4. Step 4: Simplify right side
    3,900.30x = 21,467,933.75
  5. Step 5: Solve for x
    x = 21,467,933.75/3,900.30
  6. Step 6: Final answer
    x = 5,504.18

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1.5x scale

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.