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Finding the Fourth Proportional to 3,769.75, 5,658.15 and 1,922.20

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Solution

The fourth proportional to 3,769.75, 5,658.15 and 1,922.20 is: 2,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,769.75 : 5,658.15 = 1,922.20 : x
  2. Step 2: Convert to fraction form
    3,769.75/5,658.15 = 1,922.20/x
  3. Step 3: Cross multiply
    3,769.75x = 5,658.15 × 1,922.20
  4. Step 4: Simplify right side
    3,769.75x = 10,876,095.93
  5. Step 5: Solve for x
    x = 10,876,095.93/3,769.75
  6. Step 6: Final answer
    x = 2,885.10

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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.