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Finding the Fourth Proportional to 3,859.55, 5,789.32 and 937.83

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Solution

The fourth proportional to 3,859.55, 5,789.32 and 937.83 is: 1,406.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.55 : 5,789.32 = 937.83 : x
  2. Step 2: Convert to fraction form
    3,859.55/5,789.32 = 937.83/x
  3. Step 3: Cross multiply
    3,859.55x = 5,789.32 × 937.83
  4. Step 4: Simplify right side
    3,859.55x = 5,429,390.05
  5. Step 5: Solve for x
    x = 5,429,390.05/3,859.55
  6. Step 6: Final answer
    x = 1,406.74

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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.