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Finding the Fourth Proportional to 3,343.46, 4,611.47 and 2,815.16

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Solution

The fourth proportional to 3,343.46, 4,611.47 and 2,815.16 is: 3,882.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,343.46 : 4,611.47 = 2,815.16 : x
  2. Step 2: Convert to fraction form
    3,343.46/4,611.47 = 2,815.16/x
  3. Step 3: Cross multiply
    3,343.46x = 4,611.47 × 2,815.16
  4. Step 4: Simplify right side
    3,343.46x = 12,981,988.75
  5. Step 5: Solve for x
    x = 12,981,988.75/3,343.46
  6. Step 6: Final answer
    x = 3,882.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.