Home / 3,936.80-5,432.97-2,235.43

Finding the Fourth Proportional to 3,936.80, 5,432.97 and 2,235.43

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Solution

The fourth proportional to 3,936.80, 5,432.97 and 2,235.43 is: 3,085.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.80 : 5,432.97 = 2,235.43 : x
  2. Step 2: Convert to fraction form
    3,936.80/5,432.97 = 2,235.43/x
  3. Step 3: Cross multiply
    3,936.80x = 5,432.97 × 2,235.43
  4. Step 4: Simplify right side
    3,936.80x = 12,145,039.30
  5. Step 5: Solve for x
    x = 12,145,039.30/3,936.80
  6. Step 6: Final answer
    x = 3,085.00

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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.