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Finding the Fourth Proportional to 2,871.45, 4,305.23 and 996.85

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Solution

The fourth proportional to 2,871.45, 4,305.23 and 996.85 is: 1,494.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.45 : 4,305.23 = 996.85 : x
  2. Step 2: Convert to fraction form
    2,871.45/4,305.23 = 996.85/x
  3. Step 3: Cross multiply
    2,871.45x = 4,305.23 × 996.85
  4. Step 4: Simplify right side
    2,871.45x = 4,291,663.54
  5. Step 5: Solve for x
    x = 4,291,663.54/2,871.45
  6. Step 6: Final answer
    x = 1,494.60

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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.