Home / 1,643.31-2,268.23-935.52

Finding the Fourth Proportional to 1,643.31, 2,268.23 and 935.52

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Solution

The fourth proportional to 1,643.31, 2,268.23 and 935.52 is: 1,291.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643.31 : 2,268.23 = 935.52 : x
  2. Step 2: Convert to fraction form
    1,643.31/2,268.23 = 935.52/x
  3. Step 3: Cross multiply
    1,643.31x = 2,268.23 × 935.52
  4. Step 4: Simplify right side
    1,643.31x = 2,121,969.85
  5. Step 5: Solve for x
    x = 2,121,969.85/1,643.31
  6. Step 6: Final answer
    x = 1,291.28

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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.