Home / 3,427.89-5,139.91-1,205.81

Finding the Fourth Proportional to 3,427.89, 5,139.91 and 1,205.81

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Solution

The fourth proportional to 3,427.89, 5,139.91 and 1,205.81 is: 1,808.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,427.89 : 5,139.91 = 1,205.81 : x
  2. Step 2: Convert to fraction form
    3,427.89/5,139.91 = 1,205.81/x
  3. Step 3: Cross multiply
    3,427.89x = 5,139.91 × 1,205.81
  4. Step 4: Simplify right side
    3,427.89x = 6,197,757.63
  5. Step 5: Solve for x
    x = 6,197,757.63/3,427.89
  6. Step 6: Final answer
    x = 1,808.04

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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.