Home / 3,871.18-5,342.34-2,192.55

Finding the Fourth Proportional to 3,871.18, 5,342.34 and 2,192.55

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Solution

The fourth proportional to 3,871.18, 5,342.34 and 2,192.55 is: 3,025.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.18 : 5,342.34 = 2,192.55 : x
  2. Step 2: Convert to fraction form
    3,871.18/5,342.34 = 2,192.55/x
  3. Step 3: Cross multiply
    3,871.18x = 5,342.34 × 2,192.55
  4. Step 4: Simplify right side
    3,871.18x = 11,713,347.57
  5. Step 5: Solve for x
    x = 11,713,347.57/3,871.18
  6. Step 6: Final answer
    x = 3,025.78

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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.