Home / 4,221.43-5,821.79-2,727.78

Finding the Fourth Proportional to 4,221.43, 5,821.79 and 2,727.78

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Solution

The fourth proportional to 4,221.43, 5,821.79 and 2,727.78 is: 3,761.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,221.43 : 5,821.79 = 2,727.78 : x
  2. Step 2: Convert to fraction form
    4,221.43/5,821.79 = 2,727.78/x
  3. Step 3: Cross multiply
    4,221.43x = 5,821.79 × 2,727.78
  4. Step 4: Simplify right side
    4,221.43x = 15,880,526.86
  5. Step 5: Solve for x
    x = 15,880,526.86/4,221.43
  6. Step 6: Final answer
    x = 3,761.89

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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.