Home / 1,191.26-1,786.91-325.57

Finding the Fourth Proportional to 1,191.26, 1,786.91 and 325.57

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Solution

The fourth proportional to 1,191.26, 1,786.91 and 325.57 is: 488.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.26 : 1,786.91 = 325.57 : x
  2. Step 2: Convert to fraction form
    1,191.26/1,786.91 = 325.57/x
  3. Step 3: Cross multiply
    1,191.26x = 1,786.91 × 325.57
  4. Step 4: Simplify right side
    1,191.26x = 581,763.38
  5. Step 5: Solve for x
    x = 581,763.38/1,191.26
  6. Step 6: Final answer
    x = 488.36

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1.5x scale

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.