Home / 1,191.26-1,642.21-836.07

Finding the Fourth Proportional to 1,191.26, 1,642.21 and 836.07

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Solution

The fourth proportional to 1,191.26, 1,642.21 and 836.07 is: 1,152.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.26 : 1,642.21 = 836.07 : x
  2. Step 2: Convert to fraction form
    1,191.26/1,642.21 = 836.07/x
  3. Step 3: Cross multiply
    1,191.26x = 1,642.21 × 836.07
  4. Step 4: Simplify right side
    1,191.26x = 1,372,998.33
  5. Step 5: Solve for x
    x = 1,372,998.33/1,191.26
  6. Step 6: Final answer
    x = 1,152.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.