Home / 3,119.77-4,301.39-1,998.86

Finding the Fourth Proportional to 3,119.77, 4,301.39 and 1,998.86

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Solution

The fourth proportional to 3,119.77, 4,301.39 and 1,998.86 is: 2,755.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.77 : 4,301.39 = 1,998.86 : x
  2. Step 2: Convert to fraction form
    3,119.77/4,301.39 = 1,998.86/x
  3. Step 3: Cross multiply
    3,119.77x = 4,301.39 × 1,998.86
  4. Step 4: Simplify right side
    3,119.77x = 8,597,866.42
  5. Step 5: Solve for x
    x = 8,597,866.42/3,119.77
  6. Step 6: Final answer
    x = 2,755.93

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Double scale
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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.