Home / 3,937.20-5,899.32-3,120.72

Finding the Fourth Proportional to 3,937.20, 5,899.32 and 3,120.72

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Solution

The fourth proportional to 3,937.20, 5,899.32 and 3,120.72 is: 4,675.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.20 : 5,899.32 = 3,120.72 : x
  2. Step 2: Convert to fraction form
    3,937.20/5,899.32 = 3,120.72/x
  3. Step 3: Cross multiply
    3,937.20x = 5,899.32 × 3,120.72
  4. Step 4: Simplify right side
    3,937.20x = 18,410,125.91
  5. Step 5: Solve for x
    x = 18,410,125.91/3,937.20
  6. Step 6: Final answer
    x = 4,675.94

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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.