Home / 3,156.40-4,739.22-2,612.04

Finding the Fourth Proportional to 3,156.40, 4,739.22 and 2,612.04

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Solution

The fourth proportional to 3,156.40, 4,739.22 and 2,612.04 is: 3,921.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.40 : 4,739.22 = 2,612.04 : x
  2. Step 2: Convert to fraction form
    3,156.40/4,739.22 = 2,612.04/x
  3. Step 3: Cross multiply
    3,156.40x = 4,739.22 × 2,612.04
  4. Step 4: Simplify right side
    3,156.40x = 12,379,032.21
  5. Step 5: Solve for x
    x = 12,379,032.21/3,156.40
  6. Step 6: Final answer
    x = 3,921.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.