Home / 3,320.70-4,981.68-1,372.86

Finding the Fourth Proportional to 3,320.70, 4,981.68 and 1,372.86

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Solution

The fourth proportional to 3,320.70, 4,981.68 and 1,372.86 is: 2,059.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.70 : 4,981.68 = 1,372.86 : x
  2. Step 2: Convert to fraction form
    3,320.70/4,981.68 = 1,372.86/x
  3. Step 3: Cross multiply
    3,320.70x = 4,981.68 × 1,372.86
  4. Step 4: Simplify right side
    3,320.70x = 6,839,149.20
  5. Step 5: Solve for x
    x = 6,839,149.20/3,320.70
  6. Step 6: Final answer
    x = 2,059.55

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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.