Home / 5,219.36-7,202.78-2,861.72

Finding the Fourth Proportional to 5,219.36, 7,202.78 and 2,861.72

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Solution

The fourth proportional to 5,219.36, 7,202.78 and 2,861.72 is: 3,949.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.36 : 7,202.78 = 2,861.72 : x
  2. Step 2: Convert to fraction form
    5,219.36/7,202.78 = 2,861.72/x
  3. Step 3: Cross multiply
    5,219.36x = 7,202.78 × 2,861.72
  4. Step 4: Simplify right side
    5,219.36x = 20,612,339.58
  5. Step 5: Solve for x
    x = 20,612,339.58/5,219.36
  6. Step 6: Final answer
    x = 3,949.21

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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.