Home / 4,221.17-6,330.68-1,997.81

Finding the Fourth Proportional to 4,221.17, 6,330.68 and 1,997.81

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Solution

The fourth proportional to 4,221.17, 6,330.68 and 1,997.81 is: 2,996.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,221.17 : 6,330.68 = 1,997.81 : x
  2. Step 2: Convert to fraction form
    4,221.17/6,330.68 = 1,997.81/x
  3. Step 3: Cross multiply
    4,221.17x = 6,330.68 × 1,997.81
  4. Step 4: Simplify right side
    4,221.17x = 12,647,485.82
  5. Step 5: Solve for x
    x = 12,647,485.82/4,221.17
  6. Step 6: Final answer
    x = 2,996.20

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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.