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Finding the Fourth Proportional to 2,885.22, 3,983.49 and 2,220.84

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Solution

The fourth proportional to 2,885.22, 3,983.49 and 2,220.84 is: 3,066.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.22 : 3,983.49 = 2,220.84 : x
  2. Step 2: Convert to fraction form
    2,885.22/3,983.49 = 2,220.84/x
  3. Step 3: Cross multiply
    2,885.22x = 3,983.49 × 2,220.84
  4. Step 4: Simplify right side
    2,885.22x = 8,846,693.93
  5. Step 5: Solve for x
    x = 8,846,693.93/2,885.22
  6. Step 6: Final answer
    x = 3,066.21

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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.