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Finding the Fourth Proportional to 3,780.92, 5,669.04 and 1,834.40

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Solution

The fourth proportional to 3,780.92, 5,669.04 and 1,834.40 is: 2,750.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.92 : 5,669.04 = 1,834.40 : x
  2. Step 2: Convert to fraction form
    3,780.92/5,669.04 = 1,834.40/x
  3. Step 3: Cross multiply
    3,780.92x = 5,669.04 × 1,834.40
  4. Step 4: Simplify right side
    3,780.92x = 10,399,286.98
  5. Step 5: Solve for x
    x = 10,399,286.98/3,780.92
  6. Step 6: Final answer
    x = 2,750.46

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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.