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Finding the Fourth Proportional to 2,885.81, 3,982.62 and 2,176.41

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Solution

The fourth proportional to 2,885.81, 3,982.62 and 2,176.41 is: 3,003.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.81 : 3,982.62 = 2,176.41 : x
  2. Step 2: Convert to fraction form
    2,885.81/3,982.62 = 2,176.41/x
  3. Step 3: Cross multiply
    2,885.81x = 3,982.62 × 2,176.41
  4. Step 4: Simplify right side
    2,885.81x = 8,667,796.85
  5. Step 5: Solve for x
    x = 8,667,796.85/2,885.81
  6. Step 6: Final answer
    x = 3,003.59

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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.