Home / 3,981.88-5,495.59-2,866.51

Finding the Fourth Proportional to 3,981.88, 5,495.59 and 2,866.51

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Solution

The fourth proportional to 3,981.88, 5,495.59 and 2,866.51 is: 3,956.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.88 : 5,495.59 = 2,866.51 : x
  2. Step 2: Convert to fraction form
    3,981.88/5,495.59 = 2,866.51/x
  3. Step 3: Cross multiply
    3,981.88x = 5,495.59 × 2,866.51
  4. Step 4: Simplify right side
    3,981.88x = 15,753,163.69
  5. Step 5: Solve for x
    x = 15,753,163.69/3,981.88
  6. Step 6: Final answer
    x = 3,956.21

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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.