Home / 7,403.89-11,107.38-2,138.89

Finding the Fourth Proportional to 7,403.89, 11,107.38 and 2,138.89

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Solution

The fourth proportional to 7,403.89, 11,107.38 and 2,138.89 is: 3,208.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,403.89 : 11,107.38 = 2,138.89 : x
  2. Step 2: Convert to fraction form
    7,403.89/11,107.38 = 2,138.89/x
  3. Step 3: Cross multiply
    7,403.89x = 11,107.38 × 2,138.89
  4. Step 4: Simplify right side
    7,403.89x = 23,757,444.26
  5. Step 5: Solve for x
    x = 23,757,444.26/7,403.89
  6. Step 6: Final answer
    x = 3,208.78

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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.