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Finding the Fourth Proportional to 3,766.47, 5,647.67 and 2,991.46

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Solution

The fourth proportional to 3,766.47, 5,647.67 and 2,991.46 is: 4,485.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,766.47 : 5,647.67 = 2,991.46 : x
  2. Step 2: Convert to fraction form
    3,766.47/5,647.67 = 2,991.46/x
  3. Step 3: Cross multiply
    3,766.47x = 5,647.67 × 2,991.46
  4. Step 4: Simplify right side
    3,766.47x = 16,894,778.90
  5. Step 5: Solve for x
    x = 16,894,778.90/3,766.47
  6. Step 6: Final answer
    x = 4,485.57

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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.