Home / 5,255.75-7,886.36-2,138.06

Finding the Fourth Proportional to 5,255.75, 7,886.36 and 2,138.06

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Solution

The fourth proportional to 5,255.75, 7,886.36 and 2,138.06 is: 3,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,255.75 : 7,886.36 = 2,138.06 : x
  2. Step 2: Convert to fraction form
    5,255.75/7,886.36 = 2,138.06/x
  3. Step 3: Cross multiply
    5,255.75x = 7,886.36 × 2,138.06
  4. Step 4: Simplify right side
    5,255.75x = 16,861,489.12
  5. Step 5: Solve for x
    x = 16,861,489.12/5,255.75
  6. Step 6: Final answer
    x = 3,208.20

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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.