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Finding the Fourth Proportional to 8,938.72, 13,407.36 and 3,672.22

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Solution

The fourth proportional to 8,938.72, 13,407.36 and 3,672.22 is: 5,508.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.72 : 13,407.36 = 3,672.22 : x
  2. Step 2: Convert to fraction form
    8,938.72/13,407.36 = 3,672.22/x
  3. Step 3: Cross multiply
    8,938.72x = 13,407.36 × 3,672.22
  4. Step 4: Simplify right side
    8,938.72x = 49,234,775.54
  5. Step 5: Solve for x
    x = 49,234,775.54/8,938.72
  6. Step 6: Final answer
    x = 5,508.03

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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.