Home / 3,186.85-4,395.41-2,305.57

Finding the Fourth Proportional to 3,186.85, 4,395.41 and 2,305.57

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Solution

The fourth proportional to 3,186.85, 4,395.41 and 2,305.57 is: 3,179.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.85 : 4,395.41 = 2,305.57 : x
  2. Step 2: Convert to fraction form
    3,186.85/4,395.41 = 2,305.57/x
  3. Step 3: Cross multiply
    3,186.85x = 4,395.41 × 2,305.57
  4. Step 4: Simplify right side
    3,186.85x = 10,133,909.22
  5. Step 5: Solve for x
    x = 10,133,909.22/3,186.85
  6. Step 6: Final answer
    x = 3,179.92

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1.5x scale

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.