Home / 1,185.06-1,631.64-1,007.64

Finding the Fourth Proportional to 1,185.06, 1,631.64 and 1,007.64

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Solution

The fourth proportional to 1,185.06, 1,631.64 and 1,007.64 is: 1,387.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185.06 : 1,631.64 = 1,007.64 : x
  2. Step 2: Convert to fraction form
    1,185.06/1,631.64 = 1,007.64/x
  3. Step 3: Cross multiply
    1,185.06x = 1,631.64 × 1,007.64
  4. Step 4: Simplify right side
    1,185.06x = 1,644,105.73
  5. Step 5: Solve for x
    x = 1,644,105.73/1,185.06
  6. Step 6: Final answer
    x = 1,387.36

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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.