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Finding the Fourth Proportional to 3,429.39, 5,129.39 and 3,180.39

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Solution

The fourth proportional to 3,429.39, 5,129.39 and 3,180.39 is: 4,756.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429.39 : 5,129.39 = 3,180.39 : x
  2. Step 2: Convert to fraction form
    3,429.39/5,129.39 = 3,180.39/x
  3. Step 3: Cross multiply
    3,429.39x = 5,129.39 × 3,180.39
  4. Step 4: Simplify right side
    3,429.39x = 16,313,444.76
  5. Step 5: Solve for x
    x = 16,313,444.76/3,429.39
  6. Step 6: Final answer
    x = 4,756.95

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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.