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Finding the Fourth Proportional to 6,645.54, 9,947 and 4,419.24

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Solution

The fourth proportional to 6,645.54, 9,947 and 4,419.24 is: 6,614.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,645.54 : 9,947 = 4,419.24 : x
  2. Step 2: Convert to fraction form
    6,645.54/9,947 = 4,419.24/x
  3. Step 3: Cross multiply
    6,645.54x = 9,947 × 4,419.24
  4. Step 4: Simplify right side
    6,645.54x = 43,958,180.28
  5. Step 5: Solve for x
    x = 43,958,180.28/6,645.54
  6. Step 6: Final answer
    x = 6,614.69

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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.