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Finding the Fourth Proportional to 3,489.96, 5,238.41 and 2,839.51

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Solution

The fourth proportional to 3,489.96, 5,238.41 and 2,839.51 is: 4,262.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.96 : 5,238.41 = 2,839.51 : x
  2. Step 2: Convert to fraction form
    3,489.96/5,238.41 = 2,839.51/x
  3. Step 3: Cross multiply
    3,489.96x = 5,238.41 × 2,839.51
  4. Step 4: Simplify right side
    3,489.96x = 14,874,480.46
  5. Step 5: Solve for x
    x = 14,874,480.46/3,489.96
  6. Step 6: Final answer
    x = 4,262.08

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1.5x scale

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.