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Finding the Fourth Proportional to 3,396.77, 4,687.89 and 1,904.69

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Solution

The fourth proportional to 3,396.77, 4,687.89 and 1,904.69 is: 2,628.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,396.77 : 4,687.89 = 1,904.69 : x
  2. Step 2: Convert to fraction form
    3,396.77/4,687.89 = 1,904.69/x
  3. Step 3: Cross multiply
    3,396.77x = 4,687.89 × 1,904.69
  4. Step 4: Simplify right side
    3,396.77x = 8,928,988.92
  5. Step 5: Solve for x
    x = 8,928,988.92/3,396.77
  6. Step 6: Final answer
    x = 2,628.67

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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.