Home / 3,898.25-5,378.24-2,219.22

Finding the Fourth Proportional to 3,898.25, 5,378.24 and 2,219.22

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Solution

The fourth proportional to 3,898.25, 5,378.24 and 2,219.22 is: 3,061.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.25 : 5,378.24 = 2,219.22 : x
  2. Step 2: Convert to fraction form
    3,898.25/5,378.24 = 2,219.22/x
  3. Step 3: Cross multiply
    3,898.25x = 5,378.24 × 2,219.22
  4. Step 4: Simplify right side
    3,898.25x = 11,935,486.68
  5. Step 5: Solve for x
    x = 11,935,486.68/3,898.25
  6. Step 6: Final answer
    x = 3,061.76

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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.