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Finding the Fourth Proportional to 3,902.69, 5,854.85 and 1,305.56

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Solution

The fourth proportional to 3,902.69, 5,854.85 and 1,305.56 is: 1,958.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.69 : 5,854.85 = 1,305.56 : x
  2. Step 2: Convert to fraction form
    3,902.69/5,854.85 = 1,305.56/x
  3. Step 3: Cross multiply
    3,902.69x = 5,854.85 × 1,305.56
  4. Step 4: Simplify right side
    3,902.69x = 7,643,870.97
  5. Step 5: Solve for x
    x = 7,643,870.97/3,902.69
  6. Step 6: Final answer
    x = 1,958.61

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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.