Home / 8,140.88-12,202.80-3,761.21

Finding the Fourth Proportional to 8,140.88, 12,202.80 and 3,761.21

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Solution

The fourth proportional to 8,140.88, 12,202.80 and 3,761.21 is: 5,637.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.88 : 12,202.80 = 3,761.21 : x
  2. Step 2: Convert to fraction form
    8,140.88/12,202.80 = 3,761.21/x
  3. Step 3: Cross multiply
    8,140.88x = 12,202.80 × 3,761.21
  4. Step 4: Simplify right side
    8,140.88x = 45,897,232.37
  5. Step 5: Solve for x
    x = 45,897,232.37/8,140.88
  6. Step 6: Final answer
    x = 5,637.87

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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.