Home / 3,839.22-5,297.88-2,160.90

Finding the Fourth Proportional to 3,839.22, 5,297.88 and 2,160.90

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Solution

The fourth proportional to 3,839.22, 5,297.88 and 2,160.90 is: 2,981.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.22 : 5,297.88 = 2,160.90 : x
  2. Step 2: Convert to fraction form
    3,839.22/5,297.88 = 2,160.90/x
  3. Step 3: Cross multiply
    3,839.22x = 5,297.88 × 2,160.90
  4. Step 4: Simplify right side
    3,839.22x = 11,448,188.89
  5. Step 5: Solve for x
    x = 11,448,188.89/3,839.22
  6. Step 6: Final answer
    x = 2,981.90

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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.