Home / 11,851.82-17,778.75-3,086.72

Finding the Fourth Proportional to 11,851.82, 17,778.75 and 3,086.72

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Solution

The fourth proportional to 11,851.82, 17,778.75 and 3,086.72 is: 4,630.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,851.82 : 17,778.75 = 3,086.72 : x
  2. Step 2: Convert to fraction form
    11,851.82/17,778.75 = 3,086.72/x
  3. Step 3: Cross multiply
    11,851.82x = 17,778.75 × 3,086.72
  4. Step 4: Simplify right side
    11,851.82x = 54,877,989.40
  5. Step 5: Solve for x
    x = 54,877,989.40/11,851.82
  6. Step 6: Final answer
    x = 4,630.34

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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.