Home / 5,121.76-7,069.80-3,025.75

Finding the Fourth Proportional to 5,121.76, 7,069.80 and 3,025.75

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Solution

The fourth proportional to 5,121.76, 7,069.80 and 3,025.75 is: 4,176.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.76 : 7,069.80 = 3,025.75 : x
  2. Step 2: Convert to fraction form
    5,121.76/7,069.80 = 3,025.75/x
  3. Step 3: Cross multiply
    5,121.76x = 7,069.80 × 3,025.75
  4. Step 4: Simplify right side
    5,121.76x = 21,391,447.35
  5. Step 5: Solve for x
    x = 21,391,447.35/5,121.76
  6. Step 6: Final answer
    x = 4,176.58

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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.