Home / 5,279.46-7,912.98-2,157.54

Finding the Fourth Proportional to 5,279.46, 7,912.98 and 2,157.54

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Solution

The fourth proportional to 5,279.46, 7,912.98 and 2,157.54 is: 3,233.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.46 : 7,912.98 = 2,157.54 : x
  2. Step 2: Convert to fraction form
    5,279.46/7,912.98 = 2,157.54/x
  3. Step 3: Cross multiply
    5,279.46x = 7,912.98 × 2,157.54
  4. Step 4: Simplify right side
    5,279.46x = 17,072,570.87
  5. Step 5: Solve for x
    x = 17,072,570.87/5,279.46
  6. Step 6: Final answer
    x = 3,233.77

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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.