Home / 2,638.38-3,958.95-1,713.72

Finding the Fourth Proportional to 2,638.38, 3,958.95 and 1,713.72

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Solution

The fourth proportional to 2,638.38, 3,958.95 and 1,713.72 is: 2,571.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.38 : 3,958.95 = 1,713.72 : x
  2. Step 2: Convert to fraction form
    2,638.38/3,958.95 = 1,713.72/x
  3. Step 3: Cross multiply
    2,638.38x = 3,958.95 × 1,713.72
  4. Step 4: Simplify right side
    2,638.38x = 6,784,531.79
  5. Step 5: Solve for x
    x = 6,784,531.79/2,638.38
  6. Step 6: Final answer
    x = 2,571.48

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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.