Home / 3,278.99-4,920.71-1,429.04

Finding the Fourth Proportional to 3,278.99, 4,920.71 and 1,429.04

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Solution

The fourth proportional to 3,278.99, 4,920.71 and 1,429.04 is: 2,144.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.99 : 4,920.71 = 1,429.04 : x
  2. Step 2: Convert to fraction form
    3,278.99/4,920.71 = 1,429.04/x
  3. Step 3: Cross multiply
    3,278.99x = 4,920.71 × 1,429.04
  4. Step 4: Simplify right side
    3,278.99x = 7,031,896.57
  5. Step 5: Solve for x
    x = 7,031,896.57/3,278.99
  6. Step 6: Final answer
    x = 2,144.53

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1.5x scale

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.