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Finding the Fourth Proportional to 3,937.70, 5,904.60 and 1,855.92

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Solution

The fourth proportional to 3,937.70, 5,904.60 and 1,855.92 is: 2,782.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.70 : 5,904.60 = 1,855.92 : x
  2. Step 2: Convert to fraction form
    3,937.70/5,904.60 = 1,855.92/x
  3. Step 3: Cross multiply
    3,937.70x = 5,904.60 × 1,855.92
  4. Step 4: Simplify right side
    3,937.70x = 10,958,465.23
  5. Step 5: Solve for x
    x = 10,958,465.23/3,937.70
  6. Step 6: Final answer
    x = 2,782.96

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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.