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Finding the Fourth Proportional to 3,309.95, 4,965.53 and 1,361.09

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Solution

The fourth proportional to 3,309.95, 4,965.53 and 1,361.09 is: 2,041.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,309.95 : 4,965.53 = 1,361.09 : x
  2. Step 2: Convert to fraction form
    3,309.95/4,965.53 = 1,361.09/x
  3. Step 3: Cross multiply
    3,309.95x = 4,965.53 × 1,361.09
  4. Step 4: Simplify right side
    3,309.95x = 6,758,501.59
  5. Step 5: Solve for x
    x = 6,758,501.59/3,309.95
  6. Step 6: Final answer
    x = 2,041.88

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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.