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Finding the Fourth Proportional to 6,389.69, 9,573.90 and 2,227.40

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Solution

The fourth proportional to 6,389.69, 9,573.90 and 2,227.40 is: 3,337.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.69 : 9,573.90 = 2,227.40 : x
  2. Step 2: Convert to fraction form
    6,389.69/9,573.90 = 2,227.40/x
  3. Step 3: Cross multiply
    6,389.69x = 9,573.90 × 2,227.40
  4. Step 4: Simplify right side
    6,389.69x = 21,324,884.54
  5. Step 5: Solve for x
    x = 21,324,884.54/6,389.69
  6. Step 6: Final answer
    x = 3,337.39

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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.