Home / 3,980.48-5,489.39-2,706.27

Finding the Fourth Proportional to 3,980.48, 5,489.39 and 2,706.27

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Solution

The fourth proportional to 3,980.48, 5,489.39 and 2,706.27 is: 3,732.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.48 : 5,489.39 = 2,706.27 : x
  2. Step 2: Convert to fraction form
    3,980.48/5,489.39 = 2,706.27/x
  3. Step 3: Cross multiply
    3,980.48x = 5,489.39 × 2,706.27
  4. Step 4: Simplify right side
    3,980.48x = 14,855,757.94
  5. Step 5: Solve for x
    x = 14,855,757.94/3,980.48
  6. Step 6: Final answer
    x = 3,732.16

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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.