Home / 3,917.73-5,401.47-2,857.04

Finding the Fourth Proportional to 3,917.73, 5,401.47 and 2,857.04

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Solution

The fourth proportional to 3,917.73, 5,401.47 and 2,857.04 is: 3,939.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.73 : 5,401.47 = 2,857.04 : x
  2. Step 2: Convert to fraction form
    3,917.73/5,401.47 = 2,857.04/x
  3. Step 3: Cross multiply
    3,917.73x = 5,401.47 × 2,857.04
  4. Step 4: Simplify right side
    3,917.73x = 15,432,188.84
  5. Step 5: Solve for x
    x = 15,432,188.84/3,917.73
  6. Step 6: Final answer
    x = 3,939.06

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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.