Home / 6,719.28-10,100.70-4,138.56

Finding the Fourth Proportional to 6,719.28, 10,100.70 and 4,138.56

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Solution

The fourth proportional to 6,719.28, 10,100.70 and 4,138.56 is: 6,221.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,719.28 : 10,100.70 = 4,138.56 : x
  2. Step 2: Convert to fraction form
    6,719.28/10,100.70 = 4,138.56/x
  3. Step 3: Cross multiply
    6,719.28x = 10,100.70 × 4,138.56
  4. Step 4: Simplify right side
    6,719.28x = 41,802,352.99
  5. Step 5: Solve for x
    x = 41,802,352.99/6,719.28
  6. Step 6: Final answer
    x = 6,221.25

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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.