Home / 3,780.72-5,217.96-2,721.99

Finding the Fourth Proportional to 3,780.72, 5,217.96 and 2,721.99

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Solution

The fourth proportional to 3,780.72, 5,217.96 and 2,721.99 is: 3,756.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.72 : 5,217.96 = 2,721.99 : x
  2. Step 2: Convert to fraction form
    3,780.72/5,217.96 = 2,721.99/x
  3. Step 3: Cross multiply
    3,780.72x = 5,217.96 × 2,721.99
  4. Step 4: Simplify right side
    3,780.72x = 14,203,215.09
  5. Step 5: Solve for x
    x = 14,203,215.09/3,780.72
  6. Step 6: Final answer
    x = 3,756.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.