Home / 2,217.45-3,060.09-1,222.71

Finding the Fourth Proportional to 2,217.45, 3,060.09 and 1,222.71

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Solution

The fourth proportional to 2,217.45, 3,060.09 and 1,222.71 is: 1,687.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.45 : 3,060.09 = 1,222.71 : x
  2. Step 2: Convert to fraction form
    2,217.45/3,060.09 = 1,222.71/x
  3. Step 3: Cross multiply
    2,217.45x = 3,060.09 × 1,222.71
  4. Step 4: Simplify right side
    2,217.45x = 3,741,602.64
  5. Step 5: Solve for x
    x = 3,741,602.64/2,217.45
  6. Step 6: Final answer
    x = 1,687.34

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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.