Home / 3,619.31-5,429.52-1,279.62

Finding the Fourth Proportional to 3,619.31, 5,429.52 and 1,279.62

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Solution

The fourth proportional to 3,619.31, 5,429.52 and 1,279.62 is: 1,919.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.31 : 5,429.52 = 1,279.62 : x
  2. Step 2: Convert to fraction form
    3,619.31/5,429.52 = 1,279.62/x
  3. Step 3: Cross multiply
    3,619.31x = 5,429.52 × 1,279.62
  4. Step 4: Simplify right side
    3,619.31x = 6,947,722.38
  5. Step 5: Solve for x
    x = 6,947,722.38/3,619.31
  6. Step 6: Final answer
    x = 1,919.63

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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.