Home / 5,227.25-7,840.82-1,331.61

Finding the Fourth Proportional to 5,227.25, 7,840.82 and 1,331.61

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Solution

The fourth proportional to 5,227.25, 7,840.82 and 1,331.61 is: 1,997.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,227.25 : 7,840.82 = 1,331.61 : x
  2. Step 2: Convert to fraction form
    5,227.25/7,840.82 = 1,331.61/x
  3. Step 3: Cross multiply
    5,227.25x = 7,840.82 × 1,331.61
  4. Step 4: Simplify right side
    5,227.25x = 10,440,907.66
  5. Step 5: Solve for x
    x = 10,440,907.66/5,227.25
  6. Step 6: Final answer
    x = 1,997.40

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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.