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Finding the Fourth Proportional to 2,885.87, 4,327.53 and 1,961.66

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Solution

The fourth proportional to 2,885.87, 4,327.53 and 1,961.66 is: 2,941.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.87 : 4,327.53 = 1,961.66 : x
  2. Step 2: Convert to fraction form
    2,885.87/4,327.53 = 1,961.66/x
  3. Step 3: Cross multiply
    2,885.87x = 4,327.53 × 1,961.66
  4. Step 4: Simplify right side
    2,885.87x = 8,489,120.86
  5. Step 5: Solve for x
    x = 8,489,120.86/2,885.87
  6. Step 6: Final answer
    x = 2,941.62

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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.