Home / 5,119.87-7,063.27-3,129.79

Finding the Fourth Proportional to 5,119.87, 7,063.27 and 3,129.79

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Solution

The fourth proportional to 5,119.87, 7,063.27 and 3,129.79 is: 4,317.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.87 : 7,063.27 = 3,129.79 : x
  2. Step 2: Convert to fraction form
    5,119.87/7,063.27 = 3,129.79/x
  3. Step 3: Cross multiply
    5,119.87x = 7,063.27 × 3,129.79
  4. Step 4: Simplify right side
    5,119.87x = 22,106,551.81
  5. Step 5: Solve for x
    x = 22,106,551.81/5,119.87
  6. Step 6: Final answer
    x = 4,317.80

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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.