Home / 3,168.96-4,381.92-2,731.20

Finding the Fourth Proportional to 3,168.96, 4,381.92 and 2,731.20

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Solution

The fourth proportional to 3,168.96, 4,381.92 and 2,731.20 is: 3,776.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.96 : 4,381.92 = 2,731.20 : x
  2. Step 2: Convert to fraction form
    3,168.96/4,381.92 = 2,731.20/x
  3. Step 3: Cross multiply
    3,168.96x = 4,381.92 × 2,731.20
  4. Step 4: Simplify right side
    3,168.96x = 11,967,899.90
  5. Step 5: Solve for x
    x = 11,967,899.90/3,168.96
  6. Step 6: Final answer
    x = 3,776.60

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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.