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Finding the Fourth Proportional to 3,475.92, 5,215.92 and 1,396.92

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Solution

The fourth proportional to 3,475.92, 5,215.92 and 1,396.92 is: 2,096.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,475.92 : 5,215.92 = 1,396.92 : x
  2. Step 2: Convert to fraction form
    3,475.92/5,215.92 = 1,396.92/x
  3. Step 3: Cross multiply
    3,475.92x = 5,215.92 × 1,396.92
  4. Step 4: Simplify right side
    3,475.92x = 7,286,222.97
  5. Step 5: Solve for x
    x = 7,286,222.97/3,475.92
  6. Step 6: Final answer
    x = 2,096.20

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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.