Home / 5,218.91-7,202.55-2,861.51

Finding the Fourth Proportional to 5,218.91, 7,202.55 and 2,861.51

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Solution

The fourth proportional to 5,218.91, 7,202.55 and 2,861.51 is: 3,949.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.91 : 7,202.55 = 2,861.51 : x
  2. Step 2: Convert to fraction form
    5,218.91/7,202.55 = 2,861.51/x
  3. Step 3: Cross multiply
    5,218.91x = 7,202.55 × 2,861.51
  4. Step 4: Simplify right side
    5,218.91x = 20,610,168.85
  5. Step 5: Solve for x
    x = 20,610,168.85/5,218.91
  6. Step 6: Final answer
    x = 3,949.13

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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.