Home / 3,431.71-5,147.51-1,091.86

Finding the Fourth Proportional to 3,431.71, 5,147.51 and 1,091.86

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Solution

The fourth proportional to 3,431.71, 5,147.51 and 1,091.86 is: 1,637.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.71 : 5,147.51 = 1,091.86 : x
  2. Step 2: Convert to fraction form
    3,431.71/5,147.51 = 1,091.86/x
  3. Step 3: Cross multiply
    3,431.71x = 5,147.51 × 1,091.86
  4. Step 4: Simplify right side
    3,431.71x = 5,620,350.13
  5. Step 5: Solve for x
    x = 5,620,350.13/3,431.71
  6. Step 6: Final answer
    x = 1,637.77

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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.