Home / 1,643.26-2,267.89-935.36

Finding the Fourth Proportional to 1,643.26, 2,267.89 and 935.36

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Solution

The fourth proportional to 1,643.26, 2,267.89 and 935.36 is: 1,290.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643.26 : 2,267.89 = 935.36 : x
  2. Step 2: Convert to fraction form
    1,643.26/2,267.89 = 935.36/x
  3. Step 3: Cross multiply
    1,643.26x = 2,267.89 × 935.36
  4. Step 4: Simplify right side
    1,643.26x = 2,121,293.59
  5. Step 5: Solve for x
    x = 2,121,293.59/1,643.26
  6. Step 6: Final answer
    x = 1,290.91

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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.