Home / 3,185.43-4,778.10-1,238.01

Finding the Fourth Proportional to 3,185.43, 4,778.10 and 1,238.01

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Solution

The fourth proportional to 3,185.43, 4,778.10 and 1,238.01 is: 1,857.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.43 : 4,778.10 = 1,238.01 : x
  2. Step 2: Convert to fraction form
    3,185.43/4,778.10 = 1,238.01/x
  3. Step 3: Cross multiply
    3,185.43x = 4,778.10 × 1,238.01
  4. Step 4: Simplify right side
    3,185.43x = 5,915,335.58
  5. Step 5: Solve for x
    x = 5,915,335.58/3,185.43
  6. Step 6: Final answer
    x = 1,857.00

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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.