Home / 4,709.28-6,489.86-3,380.70

Finding the Fourth Proportional to 4,709.28, 6,489.86 and 3,380.70

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Solution

The fourth proportional to 4,709.28, 6,489.86 and 3,380.70 is: 4,658.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,709.28 : 6,489.86 = 3,380.70 : x
  2. Step 2: Convert to fraction form
    4,709.28/6,489.86 = 3,380.70/x
  3. Step 3: Cross multiply
    4,709.28x = 6,489.86 × 3,380.70
  4. Step 4: Simplify right side
    4,709.28x = 21,940,269.70
  5. Step 5: Solve for x
    x = 21,940,269.70/4,709.28
  6. Step 6: Final answer
    x = 4,658.94

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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.