Home / 7,938.88-11,907.36-3,255.68

Finding the Fourth Proportional to 7,938.88, 11,907.36 and 3,255.68

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Solution

The fourth proportional to 7,938.88, 11,907.36 and 3,255.68 is: 4,883.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.88 : 11,907.36 = 3,255.68 : x
  2. Step 2: Convert to fraction form
    7,938.88/11,907.36 = 3,255.68/x
  3. Step 3: Cross multiply
    7,938.88x = 11,907.36 × 3,255.68
  4. Step 4: Simplify right side
    7,938.88x = 38,766,553.80
  5. Step 5: Solve for x
    x = 38,766,553.80/7,938.88
  6. Step 6: Final answer
    x = 4,883.13

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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.