Home / 3,771.45-5,205.15-3,141.09

Finding the Fourth Proportional to 3,771.45, 5,205.15 and 3,141.09

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Solution

The fourth proportional to 3,771.45, 5,205.15 and 3,141.09 is: 4,335.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,771.45 : 5,205.15 = 3,141.09 : x
  2. Step 2: Convert to fraction form
    3,771.45/5,205.15 = 3,141.09/x
  3. Step 3: Cross multiply
    3,771.45x = 5,205.15 × 3,141.09
  4. Step 4: Simplify right side
    3,771.45x = 16,349,844.61
  5. Step 5: Solve for x
    x = 16,349,844.61/3,771.45
  6. Step 6: Final answer
    x = 4,335.16

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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.