Home / 1,131.25-1,697.22-935.36

Finding the Fourth Proportional to 1,131.25, 1,697.22 and 935.36

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Solution

The fourth proportional to 1,131.25, 1,697.22 and 935.36 is: 1,403.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131.25 : 1,697.22 = 935.36 : x
  2. Step 2: Convert to fraction form
    1,131.25/1,697.22 = 935.36/x
  3. Step 3: Cross multiply
    1,131.25x = 1,697.22 × 935.36
  4. Step 4: Simplify right side
    1,131.25x = 1,587,504.80
  5. Step 5: Solve for x
    x = 1,587,504.80/1,131.25
  6. Step 6: Final answer
    x = 1,403.32

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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.