Home / 3,929-5,878.86-2,461.32

Finding the Fourth Proportional to 3,929, 5,878.86 and 2,461.32

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Solution

The fourth proportional to 3,929, 5,878.86 and 2,461.32 is: 3,682.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929 : 5,878.86 = 2,461.32 : x
  2. Step 2: Convert to fraction form
    3,929/5,878.86 = 2,461.32/x
  3. Step 3: Cross multiply
    3,929x = 5,878.86 × 2,461.32
  4. Step 4: Simplify right side
    3,929x = 14,469,755.70
  5. Step 5: Solve for x
    x = 14,469,755.70/3,929
  6. Step 6: Final answer
    x = 3,682.81

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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.