Home / 3,320.46-4,981.50-1,129.21

Finding the Fourth Proportional to 3,320.46, 4,981.50 and 1,129.21

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Solution

The fourth proportional to 3,320.46, 4,981.50 and 1,129.21 is: 1,694.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.46 : 4,981.50 = 1,129.21 : x
  2. Step 2: Convert to fraction form
    3,320.46/4,981.50 = 1,129.21/x
  3. Step 3: Cross multiply
    3,320.46x = 4,981.50 × 1,129.21
  4. Step 4: Simplify right side
    3,320.46x = 5,625,147.16
  5. Step 5: Solve for x
    x = 5,625,147.16/3,320.46
  6. Step 6: Final answer
    x = 1,694.09

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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.