Home / 3,151.45-4,718.91-2,221.97

Finding the Fourth Proportional to 3,151.45, 4,718.91 and 2,221.97

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Solution

The fourth proportional to 3,151.45, 4,718.91 and 2,221.97 is: 3,327.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.45 : 4,718.91 = 2,221.97 : x
  2. Step 2: Convert to fraction form
    3,151.45/4,718.91 = 2,221.97/x
  3. Step 3: Cross multiply
    3,151.45x = 4,718.91 × 2,221.97
  4. Step 4: Simplify right side
    3,151.45x = 10,485,276.45
  5. Step 5: Solve for x
    x = 10,485,276.45/3,151.45
  6. Step 6: Final answer
    x = 3,327.13

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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.