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Finding the Fourth Proportional to 2,991.75, 4,487.63 and 1,043.97

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Solution

The fourth proportional to 2,991.75, 4,487.63 and 1,043.97 is: 1,565.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.75 : 4,487.63 = 1,043.97 : x
  2. Step 2: Convert to fraction form
    2,991.75/4,487.63 = 1,043.97/x
  3. Step 3: Cross multiply
    2,991.75x = 4,487.63 × 1,043.97
  4. Step 4: Simplify right side
    2,991.75x = 4,684,945.87
  5. Step 5: Solve for x
    x = 4,684,945.87/2,991.75
  6. Step 6: Final answer
    x = 1,565.96

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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.