Home / 1,161.00-1,741.12-380.79

Finding the Fourth Proportional to 1,161.00, 1,741.12 and 380.79

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Solution

The fourth proportional to 1,161.00, 1,741.12 and 380.79 is: 571.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.00 : 1,741.12 = 380.79 : x
  2. Step 2: Convert to fraction form
    1,161.00/1,741.12 = 380.79/x
  3. Step 3: Cross multiply
    1,161.00x = 1,741.12 × 380.79
  4. Step 4: Simplify right side
    1,161.00x = 662,992.38
  5. Step 5: Solve for x
    x = 662,992.38/1,161.00
  6. Step 6: Final answer
    x = 571.06

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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.