Home / 2,215.17-3,322.26-1,119.78

Finding the Fourth Proportional to 2,215.17, 3,322.26 and 1,119.78

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Solution

The fourth proportional to 2,215.17, 3,322.26 and 1,119.78 is: 1,679.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.17 : 3,322.26 = 1,119.78 : x
  2. Step 2: Convert to fraction form
    2,215.17/3,322.26 = 1,119.78/x
  3. Step 3: Cross multiply
    2,215.17x = 3,322.26 × 1,119.78
  4. Step 4: Simplify right side
    2,215.17x = 3,720,200.30
  5. Step 5: Solve for x
    x = 3,720,200.30/2,215.17
  6. Step 6: Final answer
    x = 1,679.42

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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.