Home / 5,118.39-7,063.20-3,129.03

Finding the Fourth Proportional to 5,118.39, 7,063.20 and 3,129.03

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Solution

The fourth proportional to 5,118.39, 7,063.20 and 3,129.03 is: 4,317.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.39 : 7,063.20 = 3,129.03 : x
  2. Step 2: Convert to fraction form
    5,118.39/7,063.20 = 3,129.03/x
  3. Step 3: Cross multiply
    5,118.39x = 7,063.20 × 3,129.03
  4. Step 4: Simplify right side
    5,118.39x = 22,100,964.70
  5. Step 5: Solve for x
    x = 22,100,964.70/5,118.39
  6. Step 6: Final answer
    x = 4,317.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.