Home / 3,885.31-5,818.68-2,127.68

Finding the Fourth Proportional to 3,885.31, 5,818.68 and 2,127.68

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Solution

The fourth proportional to 3,885.31, 5,818.68 and 2,127.68 is: 3,186.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.31 : 5,818.68 = 2,127.68 : x
  2. Step 2: Convert to fraction form
    3,885.31/5,818.68 = 2,127.68/x
  3. Step 3: Cross multiply
    3,885.31x = 5,818.68 × 2,127.68
  4. Step 4: Simplify right side
    3,885.31x = 12,380,259.97
  5. Step 5: Solve for x
    x = 12,380,259.97/3,885.31
  6. Step 6: Final answer
    x = 3,186.43

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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.