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Finding the Fourth Proportional to 7,224.81, 10,839.90 and 4,419.39

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Solution

The fourth proportional to 7,224.81, 10,839.90 and 4,419.39 is: 6,630.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,224.81 : 10,839.90 = 4,419.39 : x
  2. Step 2: Convert to fraction form
    7,224.81/10,839.90 = 4,419.39/x
  3. Step 3: Cross multiply
    7,224.81x = 10,839.90 × 4,419.39
  4. Step 4: Simplify right side
    7,224.81x = 47,905,745.66
  5. Step 5: Solve for x
    x = 47,905,745.66/7,224.81
  6. Step 6: Final answer
    x = 6,630.73

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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.