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Finding the Fourth Proportional to 3,766.45, 5,649.73 and 993.40

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Solution

The fourth proportional to 3,766.45, 5,649.73 and 993.40 is: 1,490.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,766.45 : 5,649.73 = 993.40 : x
  2. Step 2: Convert to fraction form
    3,766.45/5,649.73 = 993.40/x
  3. Step 3: Cross multiply
    3,766.45x = 5,649.73 × 993.40
  4. Step 4: Simplify right side
    3,766.45x = 5,612,441.78
  5. Step 5: Solve for x
    x = 5,612,441.78/3,766.45
  6. Step 6: Final answer
    x = 1,490.11

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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.