Home / 3,936.74-5,432.70-2,168.34

Finding the Fourth Proportional to 3,936.74, 5,432.70 and 2,168.34

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Solution

The fourth proportional to 3,936.74, 5,432.70 and 2,168.34 is: 2,992.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.74 : 5,432.70 = 2,168.34 : x
  2. Step 2: Convert to fraction form
    3,936.74/5,432.70 = 2,168.34/x
  3. Step 3: Cross multiply
    3,936.74x = 5,432.70 × 2,168.34
  4. Step 4: Simplify right side
    3,936.74x = 11,779,940.72
  5. Step 5: Solve for x
    x = 11,779,940.72/3,936.74
  6. Step 6: Final answer
    x = 2,992.31

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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.