Home / 1,191.16-1,786.50-325.36

Finding the Fourth Proportional to 1,191.16, 1,786.50 and 325.36

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Solution

The fourth proportional to 1,191.16, 1,786.50 and 325.36 is: 487.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.16 : 1,786.50 = 325.36 : x
  2. Step 2: Convert to fraction form
    1,191.16/1,786.50 = 325.36/x
  3. Step 3: Cross multiply
    1,191.16x = 1,786.50 × 325.36
  4. Step 4: Simplify right side
    1,191.16x = 581,255.64
  5. Step 5: Solve for x
    x = 581,255.64/1,191.16
  6. Step 6: Final answer
    x = 487.97

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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.