Home / 3,995.15-5,992.68-1,221.81

Finding the Fourth Proportional to 3,995.15, 5,992.68 and 1,221.81

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Solution

The fourth proportional to 3,995.15, 5,992.68 and 1,221.81 is: 1,832.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,995.15 : 5,992.68 = 1,221.81 : x
  2. Step 2: Convert to fraction form
    3,995.15/5,992.68 = 1,221.81/x
  3. Step 3: Cross multiply
    3,995.15x = 5,992.68 × 1,221.81
  4. Step 4: Simplify right side
    3,995.15x = 7,321,898.46
  5. Step 5: Solve for x
    x = 7,321,898.46/3,995.15
  6. Step 6: Final answer
    x = 1,832.70

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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.