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Finding the Fourth Proportional to 3,691.95, 5,121.00 and 3,558.96

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Solution

The fourth proportional to 3,691.95, 5,121.00 and 3,558.96 is: 4,936.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691.95 : 5,121.00 = 3,558.96 : x
  2. Step 2: Convert to fraction form
    3,691.95/5,121.00 = 3,558.96/x
  3. Step 3: Cross multiply
    3,691.95x = 5,121.00 × 3,558.96
  4. Step 4: Simplify right side
    3,691.95x = 18,225,438.07
  5. Step 5: Solve for x
    x = 18,225,438.07/3,691.95
  6. Step 6: Final answer
    x = 4,936.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.