Home / 2,215.68-3,318.24-2,137.92

Finding the Fourth Proportional to 2,215.68, 3,318.24 and 2,137.92

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Solution

The fourth proportional to 2,215.68, 3,318.24 and 2,137.92 is: 3,201.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.68 : 3,318.24 = 2,137.92 : x
  2. Step 2: Convert to fraction form
    2,215.68/3,318.24 = 2,137.92/x
  3. Step 3: Cross multiply
    2,215.68x = 3,318.24 × 2,137.92
  4. Step 4: Simplify right side
    2,215.68x = 7,094,131.66
  5. Step 5: Solve for x
    x = 7,094,131.66/2,215.68
  6. Step 6: Final answer
    x = 3,201.79

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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.