Home / 1,185.36-1,635.26-712.97

Finding the Fourth Proportional to 1,185.36, 1,635.26 and 712.97

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Solution

The fourth proportional to 1,185.36, 1,635.26 and 712.97 is: 983.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185.36 : 1,635.26 = 712.97 : x
  2. Step 2: Convert to fraction form
    1,185.36/1,635.26 = 712.97/x
  3. Step 3: Cross multiply
    1,185.36x = 1,635.26 × 712.97
  4. Step 4: Simplify right side
    1,185.36x = 1,165,887.76
  5. Step 5: Solve for x
    x = 1,165,887.76/1,185.36
  6. Step 6: Final answer
    x = 983.58

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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.