Home / 3,396.39-4,687.21-1,904.79

Finding the Fourth Proportional to 3,396.39, 4,687.21 and 1,904.79

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Solution

The fourth proportional to 3,396.39, 4,687.21 and 1,904.79 is: 2,628.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,396.39 : 4,687.21 = 1,904.79 : x
  2. Step 2: Convert to fraction form
    3,396.39/4,687.21 = 1,904.79/x
  3. Step 3: Cross multiply
    3,396.39x = 4,687.21 × 1,904.79
  4. Step 4: Simplify right side
    3,396.39x = 8,928,150.74
  5. Step 5: Solve for x
    x = 8,928,150.74/3,396.39
  6. Step 6: Final answer
    x = 2,628.72

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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.