Home / 3,390.92-4,682.71-3,206.85

Finding the Fourth Proportional to 3,390.92, 4,682.71 and 3,206.85

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Solution

The fourth proportional to 3,390.92, 4,682.71 and 3,206.85 is: 4,428.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.92 : 4,682.71 = 3,206.85 : x
  2. Step 2: Convert to fraction form
    3,390.92/4,682.71 = 3,206.85/x
  3. Step 3: Cross multiply
    3,390.92x = 4,682.71 × 3,206.85
  4. Step 4: Simplify right side
    3,390.92x = 15,016,748.56
  5. Step 5: Solve for x
    x = 15,016,748.56/3,390.92
  6. Step 6: Final answer
    x = 4,428.52

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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.