Home / 1,161.07-1,741.95-381.18

Finding the Fourth Proportional to 1,161.07, 1,741.95 and 381.18

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Solution

The fourth proportional to 1,161.07, 1,741.95 and 381.18 is: 571.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.07 : 1,741.95 = 381.18 : x
  2. Step 2: Convert to fraction form
    1,161.07/1,741.95 = 381.18/x
  3. Step 3: Cross multiply
    1,161.07x = 1,741.95 × 381.18
  4. Step 4: Simplify right side
    1,161.07x = 663,996.50
  5. Step 5: Solve for x
    x = 663,996.50/1,161.07
  6. Step 6: Final answer
    x = 571.88

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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.