Home / 7,938.20-11,906.39-3,254.99

Finding the Fourth Proportional to 7,938.20, 11,906.39 and 3,254.99

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Solution

The fourth proportional to 7,938.20, 11,906.39 and 3,254.99 is: 4,882.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.20 : 11,906.39 = 3,254.99 : x
  2. Step 2: Convert to fraction form
    7,938.20/11,906.39 = 3,254.99/x
  3. Step 3: Cross multiply
    7,938.20x = 11,906.39 × 3,254.99
  4. Step 4: Simplify right side
    7,938.20x = 38,755,128.99
  5. Step 5: Solve for x
    x = 38,755,128.99/7,938.20
  6. Step 6: Final answer
    x = 4,882.10

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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.