Home / 3,847.45-5,310.79-2,254.61

Finding the Fourth Proportional to 3,847.45, 5,310.79 and 2,254.61

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Solution

The fourth proportional to 3,847.45, 5,310.79 and 2,254.61 is: 3,112.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.45 : 5,310.79 = 2,254.61 : x
  2. Step 2: Convert to fraction form
    3,847.45/5,310.79 = 2,254.61/x
  3. Step 3: Cross multiply
    3,847.45x = 5,310.79 × 2,254.61
  4. Step 4: Simplify right side
    3,847.45x = 11,973,750.69
  5. Step 5: Solve for x
    x = 11,973,750.69/3,847.45
  6. Step 6: Final answer
    x = 3,112.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.