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Finding the Fourth Proportional to 3,479.03, 5,212.68 and 1,721.69

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Solution

The fourth proportional to 3,479.03, 5,212.68 and 1,721.69 is: 2,579.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.03 : 5,212.68 = 1,721.69 : x
  2. Step 2: Convert to fraction form
    3,479.03/5,212.68 = 1,721.69/x
  3. Step 3: Cross multiply
    3,479.03x = 5,212.68 × 1,721.69
  4. Step 4: Simplify right side
    3,479.03x = 8,974,619.03
  5. Step 5: Solve for x
    x = 8,974,619.03/3,479.03
  6. Step 6: Final answer
    x = 2,579.63

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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.