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Finding the Fourth Proportional to 3,740.92, 5,611.46 and 1,143.86

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Solution

The fourth proportional to 3,740.92, 5,611.46 and 1,143.86 is: 1,715.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,740.92 : 5,611.46 = 1,143.86 : x
  2. Step 2: Convert to fraction form
    3,740.92/5,611.46 = 1,143.86/x
  3. Step 3: Cross multiply
    3,740.92x = 5,611.46 × 1,143.86
  4. Step 4: Simplify right side
    3,740.92x = 6,418,724.64
  5. Step 5: Solve for x
    x = 6,418,724.64/3,740.92
  6. Step 6: Final answer
    x = 1,715.81

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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.