Home / 3,871.45-5,342.73-2,192.90

Finding the Fourth Proportional to 3,871.45, 5,342.73 and 2,192.90

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Solution

The fourth proportional to 3,871.45, 5,342.73 and 2,192.90 is: 3,026.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.45 : 5,342.73 = 2,192.90 : x
  2. Step 2: Convert to fraction form
    3,871.45/5,342.73 = 2,192.90/x
  3. Step 3: Cross multiply
    3,871.45x = 5,342.73 × 2,192.90
  4. Step 4: Simplify right side
    3,871.45x = 11,716,072.62
  5. Step 5: Solve for x
    x = 11,716,072.62/3,871.45
  6. Step 6: Final answer
    x = 3,026.28

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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.