Home / 3,426.40-4,731.60-2,732.80

Finding the Fourth Proportional to 3,426.40, 4,731.60 and 2,732.80

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Solution

The fourth proportional to 3,426.40, 4,731.60 and 2,732.80 is: 3,773.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.40 : 4,731.60 = 2,732.80 : x
  2. Step 2: Convert to fraction form
    3,426.40/4,731.60 = 2,732.80/x
  3. Step 3: Cross multiply
    3,426.40x = 4,731.60 × 2,732.80
  4. Step 4: Simplify right side
    3,426.40x = 12,930,516.48
  5. Step 5: Solve for x
    x = 12,930,516.48/3,426.40
  6. Step 6: Final answer
    x = 3,773.79

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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.