Home / 7,430.78-11,147.79-2,236.25

Finding the Fourth Proportional to 7,430.78, 11,147.79 and 2,236.25

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Solution

The fourth proportional to 7,430.78, 11,147.79 and 2,236.25 is: 3,354.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,430.78 : 11,147.79 = 2,236.25 : x
  2. Step 2: Convert to fraction form
    7,430.78/11,147.79 = 2,236.25/x
  3. Step 3: Cross multiply
    7,430.78x = 11,147.79 × 2,236.25
  4. Step 4: Simplify right side
    7,430.78x = 24,929,245.39
  5. Step 5: Solve for x
    x = 24,929,245.39/7,430.78
  6. Step 6: Final answer
    x = 3,354.86

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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.